Update,
Fitted the new pads over the weekend, fronts went on no problem, but the rears again didn't want to push out, and were just pulsing in and out with the lever.  The lever seemed to have a lot of travel.  With the below post in my head, I checked the rear reservoir and found the same with the supply hose severely twisted.  I unclipped the reservoir and turned it through 2-3 full turns to untwist the hose.  Now everything is perfect, thanks Chr1s for this little gem!  The rear reservoir is merely held on with a C shaped clip, with nothing to stop it rotating, I would suggest checking yours.

Did the rear brake bleed last night,cap back on the res,tighten it and all is good,go out for a test run this morning doesn’t feel right and then brake warning light comes on  and I’m thinking Jeeze….just about to phone my other half to bring the van!!! Have a look at rear res see I’d tightened the top too much and it had twisted in the metal clip twisted the rubber brake pipe  ,twisted res the other way and all’s good….phew

Yes it does.  Never seen anything like that before, so good to know why it's there.

I ride my bike all year round, and through this winter it has got pretty grubby and my pads were starting to bind a little.  So took the callipers off, pumped the pistons out a bit to clean them (not too far), and then pushed them back all the way in.  They were actually moving pretty freely.  Cleaned up the pad backplates and the calliper body, as the corrosion was causing the pads to bind in this area.  Put it all back together.  Did this on both front and rear pads.  However, I cannot get the pads to pump out against the discs, seemingly having just endless travel on either front or rear levers.  I've started the bike, and moved it far enough so the ABS light and Brake failure message is no longer illuminated, but still nothing.  I'm guessing I have a problem with the ABS pump, but before I go too far in this direction does anyone else have any ideas.  I do not have a GS911, so can't run diagnostics via this.
Thanks
Jason

Unfortunately not, you'll need a centre stand or some type of lift that allows you to unload the rear suspension.  I did mine on a "Big Blue" lift, which lifts off the footpegs, the wheel can then be lifted off the ground, then put a jack under it to remove the tension before unbolting the linkage.

It may well be. I'd not want the pegs any lower so my recommendation would be none. It all depends on how enthusiastically you ride. If you "make progress" then peg lowering may result in some issues. If your a "driving Miss Daisy" rider then there will be no issues. Obviously, riding with a pillion will likely reduce the amount of lean (unless your pillion is a make progress fan) but it will further reduce the peg to tarmac distance as the bike rides lower.

David, having seen some of your posted photos of the lean angles you achieve on your H2 SX SE, I'm not surprised you are dragging footpegs on the ground, probably along with knees, elbows, shoulders and ears  .  I've not managed to ground mine yet, so I'm obviously of the "driving Miss Daisy" persuasion.

It is looking really good.  From someone who can only just summon the enthusiasm to rub mine over with a wet sponge every couple of months, I don't know how you have such determination.  Seeing it come together though must make it easier, and I'm starting to feel a little inspired. 

...unrelated accident...

Why no oil?
Might that make it rattle?

Or dropped the oil so that prospective buyers can't start it and hear the rattle for themselves?

Hello and Welcome.  I followed a similar route to (potential) K1300 ownership.  I bought mine in 2020 to upgrade from my VFR800.  I have not regretted the change.  The K1300S is a great, confidence inspiring machine.  It is a big, heavy machine, but if you can cope with that, it is otherwise nicely manageable.  The low speed balance is good and high speed stability exceptional.  It is a little slow to turn, but once settled it is nice and neutral.  Some find the front end feel a little remote, but I really like this, and particularly like the anti-dive under braking.  I've taken mine to the Pyrenes and NC500, plus regular weekend scratching, and even did a track day on it (It's a bit heavy for that in reality).  My only real issues have been relatively heavy tyre wear, and falling off it doing a U turn, where the slope in the road meant the ground wasn't where I expected it to be, and by the time I found the ground, the weight was too much to hold up.  Mine has close to 60K miles, and not pristine, but still looks good to me.  I do my own maintenance and repairs.  It is pretty easy to work on, and this site is a great resource.  If you go for the Motorsport version at Wigan Yamaha, it looks like a lovely bike.  Good luck.