I have a question. I had to pull my right crankcase to fix the kickstarter on my 91 cr125, when i did the powervalve spring assy fell out. I put it back in without the help of a manual. When i got the bike the jetting was really off. The bike ran the same after i put it back together, so either i got it right or it was off before i got it. Can someone give me some direction on how to set the spring tension?. i have played with the jetting and slide alot to get the bike running better, but it still loads up a little if idles more than a couple of seconds. Could the spring tension on the exhause valve be the problem, or do I need to play with the jetting more?