Id be checking for spark , could be fuel pump or even a relay . C.A.S is easy to change if you've the right tools its behind the harmonic . I went through all this crap with my VT recently wht a pain in the arse , thing mine was intermitint meanin it would only go when it felt like it drove me nuts an still is an ive changed just about everything , its still dead on the front lawn atm ,bloody spare parts joint sold me a dodgy fuel pump , havnt had a chance to rip it out cause of all thin fricken rain