ive got a honda xlr 125, 2000 Wreg and am having an electrical problem that i cant sort. every now and again the bike will run fine but then suddenly the spark will dissapear and the engine wont fire. ive replaced the coil, and fiddled about with the engine cut out on the stand, and still no good. if anyone can offer any advice i would be very gratefull. cause it´s driving me crazy!!!