hi les can you tell me what are the symptoms of a worn rocker on the performance,smoke,starting ? i reacently re ground the valves and changed the head gaskit . one of the valves had a very thick carbon deposit witch i cleaned off . wile adjusting the tappits i notised that the valve that needed cleaning had to be adjusted much ferther than the rest. i have always had a lot of white smoke on startup even after changing the injectors,lift pump,injector pump,heater plugs and pistons and now i dont know what els it could be if you could help whith this problem i would be very gratefull