I went to adjust the boys crf70s valves (first time to my knowledge) set the "T" to the indent adjusted the top valve ... Which had to come back quite a bit. We to do the bottom .. Oil came out and the "t" was off the indent. No matter how I spin the fly wheel it now rests off the indent. In one turn really far off.. The other harder to turn .. Turn it is off the mark. Adjusted the bottom valve stated it ... Very audible clicking... Help!