I have a 1994 Intruder 1400, for a few years I would have occasions where I would not get combustion on one cylinder. I would remove the front plug, clean or replace and everything was fine, last time for two years. This worked for six years, now the solution is not a solution! I changed plugs, coils, and the ignition box with a dynamax, it did not solve the problem. Please offer any solution you can. I am a disabled Vet without income or benefits so I can not afford to have a shop investigate at $120 an hour. Please help!