Bloody ell!

Fancy dash, and are those the AC Shnitzer levers? He's got sporty tyres on it too which made me smile.

I had a thorough look and agree, no obvious rust or flaky paint. I want to see the engine bits!

Dorset. Not too far!

This might be of no help at all, however there is a chance that it could be, so let me tell you of a similar situation that an acquaintance of mine suffered around 18 months ago.

Some four years ago, I decided to take up building flying model aircraft again, after a break of some 40 years. I joined the local club and learned to fly them reasonably well once more and now spend a fair amount of time there.

Just after the worst of the COVID restrictions were lifted and our flying field opened again, one of the "regulars" who was approaching 80 years of age started to lose control of his models when they were in an almost overhead position - he said that he was having vision problems and when he looked up, was suffering from double vision. This did not affect him at other times, when he was looking forward.

He went to see the GP, who to his surprise said that it was probably not the bad news that he suspected, however a scan was need to confirm his thoughts. This was duly carried out and upon revisiting the GP, my acquaintance was told that occasionally with people of his age, the main blood vessels from the body to the head would lose elasticity in the neck area and when looking up, would narrow to the point that blood flow was restricted. Whilst he wasn't offered a cure (except to change hobby - I believe he sails boats now) he still drives and, so far as I know, has not had problems since.

Is it possible that with the "head down, look up" position that is necessary on some of our bikes, the same might be happening to you, particularly if this is the only time it happens 

Glad to hear you have finally resolved your issue  Brian and hope you have many more happy years in the saddle. I have used Motolegends a couple of times myself and although they are not the cheapest they are second to none on service.

This is such a relief! But you forgot the biggest news in all this: we now get to test yet another intercom pairing weird background noises thing .

I'll start planning 2025 shortly.

Well Brian, upon reading this, my first thaught was (I'm NOT joking !) : did you consult an ear doctor (hopefully correctly translated by Google Translate) ?

The hearing organ, i.e. our ears with everything inside of them, is the (IT terminology now) "input" to our brain, for equilibrium. Getting older, and deafer, degrades that "input" and disturbs it.

If it's sorted out for good, then all OK. But IF it would ever return (I sincerely hope for you it doesn't), going to the ear doctor would be my first next step in your case ...