I have a 350x with a bit of a spark issue. It had spark when I remove the plug but when I put it in, it seems to loose it. I replaced the coil,cdi voltage regulator, source coil and lighting coils. After i replaced each part, it seems to run for awhile and then it just quits. I have been trying to solve this problem for 2 months or more and am out of ideas.I also tried bypassing the on/off switch with no avail. Does anybody have any ideas?