Whilst I'm waiting for my tyre to be delivered I thought I'd test out the fuelling hypothesis I've heard occasionally ...so I reconnected the O2 sensors and took a test ride. Nope, no difference and so far I've drawn the line at reconnecting the AI nonsense.
Later today though I noticed as I came to a slow halt that I can feel a very slight shimmy through the handlebars.....by slow I mean at about 3 mph or less.
This leaves me wondering if I've been barking up the wrong tyre.
In my book such a shimmy suggests front end not rear may be the cause.
Haven't got time today to check this out further but my plan is to
A) loosen front pinch bolts, spindle and calliper retaining bolts then pump the forks a few times and retighten everything......in case they just were careless when they did the change of tyre in the shop.
B) remove wheel and check balance, run out and out of round specs.
Any other ideas gratefully received.