Hi, I have just bought a sp1 2001. Awesome bike took it first ride today. Was riding an R1 but you can't beat the Vtwin. A lilltle problem though someone might be able to help me with. Came back at night using full beam on the lights and the engine miss fired and popped (backfired) a couple of time? I have been told that this might be caused by the battery not being fully charged. Under full lights drained to much causing this issue?? any advice. Thanks John