My bike started to sputter and jerk while riding, the speedometer needle would go crazy dropping from 60 to 10 and luckily I was close to home both times it did this. I replaced the battery and checked the regulator(the battery is 12 when off and 14 when running). I also checked my fuses and wiring, I replaced my spark plug and it rode fine for two days then same problems again. I think it might be water in the tank or the fuel filter is clogged I am gonna check those today, if not I am lost as what to do other than taking it to a Harley dealership and pay an outrages rate! Any advise or trouble shooting would be greatly appreciated...