i have a cr 125 04 i recently bought i rode it for a week and it was great. then one day i washed it, then started it to dry it off and it fouled a plug. since then it is possesed to %!ยค me off. no matter how hard i ride it, it will foul a plug. it fouls at any time, after i start it or 2 hours into my ride. i have tryed various oils, ratios and fuel octanes. i have put a new piston and rings in the bike to bring the compression up, it didnt work. i have decarbonised the exauhst system, it didnt work. i have tryed a hotter spark plug but it still fouls. i have set the carborator to its factory settings and cleaned the air filter. nothing seems to work! im out of ideas.