[Flip]

The other thing you can do to stop the dreaded suicide stand flip up scenario is simply hack-saw the sticky out part of the bolt that rests on the actuator plate.

Yes it is possible to dismantle the original Bosch headlight. Once the you have removed the reflector from the bowl, the reflector can be separated from the glass by releasing the 'W' clips, this will then allow you to clean the misty glass with something like Methylated Spirit.

As for your snotty tyres from track days conundrum, it is worth remembering that tyres will bead up fairly quickly due to the more grippy asphalt used on the track surface which may not necessarily mean it has an overly hard time.

In addition there are now a lot of classic bike only track days that are proving popular with owners of older, less track focussed machines and give owners the opportunity to enjoy their bikes in a slightly more spirited fashion without having to avoid myopic car drivers and the pot holes that seem to be the new way to slow traffic.

As others have said, all the air cooled models are getting on in years and with that will require a little more tinkering to keep them sweet.

Fuel lines and Vacuum hoses along with the Vacuum fuel tap and pump all suffer horrendously from the effects Ethanol.

The five speed gearbox is a little more clunky (agricultural?) than the six cog version possibly due to a bit wider ratios between the gears, so again you may be worrying about nothing- I would say a test ride would give you a good idea of any serious issues.