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
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