ssray

try vinegar on the blueing, I had a 1984 unrestricted one, 85mph(on the clock) flat out, it was cheaper than a restricted one

Wd40 while it will work is not a lubricant, I prefer getting some vasaline into the lock and then adding gt85 I usually coat the key a few times and try to get the stuffinside the lock, then a squirt of gt85. My bmw used to freeze up i winter, the vasaline would displace water and keep water out Ray

It has not been a choke for very many years, It`s a fuel enrichment circuit , it only works properley at low throttle openings When you whip the plugs out check the colour

They are all kind of the same, you need to remove yours and see what part number is on it, then google is your friend

Why not fit a cycle speedo? run on a battery

Wd40 is not good on rubber, Its causes it to perish-try spraying a rubber band and hang it up overnight. Gt85 very good on forks and helps with stiction aswell. afc50 etc for the engine etc Ray