hi there ive got a aprilia 50 cc on a W reg (year 2000) im having problems with it not starting every so often im not sure if it is the spark plug or if the engine is slightly flooded when it has bin runing for about half hour it starts perfect again but if left longer than tht it just wont start and yerp ive tried it with choke on and off and it just doesnt want to budge also i have a brand new battery and it keeps going flat after a while if you think you can answer this problem for me i wud be most greatfull my email is danny_simmo@hotmail.com