This bikes been parked up for 3yrs, (200miles only) & is ridden nr sea level, there's a grey wire but no AIS. It picks up from tick-over to full throttle ok, doesn't race before stalling or stall when being ridden. It's not allergic to deep water, but there's the usual slight back-fire on over-run & there's no plug fouling. It's got the usual horrible round stainless OEM UK can also. Jets; 48 PILOT, 65 STARTER and 160 MAIN. It usually stalls when I slow down and pull the clutch, or just before trying to jump over a log. The only thing I can find is the tiny ball bearing in the accel pump is stuck down, the "HAYNES" book says it should move free, if it is this ball anyone got any ideas how to get it to move without my hammer? I've used carb cleaner on everything in the carb, but it was clean anyway & the only other problems with it are the hopeless leccy boot and it blew the comp plug over the garden when I first started it. Help!!!