Mr. KilaMC18, I dont really understand your issue but if you like we can hookup and chat. I'm in the Cape Town area 2, Somerset West 2b exact. I bought my baby MC18 at the beginin' of this year and have been restoring it since. I got it for a steal but had to do alot of wotk on it till now. Anyway, what plugs are you runing? If it is a B9ES or even a BR9ES (the "R" stands for resistor and is suggested to pair wit computer controlled engines like the MC18 onwards) you are (I'm very certain of this) experiancing plug fouling issues. My bike did the same thing.

The only remedy is to purchase any plug with a copper electrode like the BR9ECS, BR9ECM OR B9EG. All of those will work but try to get the R one. They are expensive at around R130 for the ECM/ECS but the EG is about R80. Again, try to get the "R". Post a reply here and we can discuss some more!