the cct is very common on these bikes as it was controlled with oil pressure I belive. this will solve all your problems. http://cgi.ebay.com/ebaymotors/APE-Cam-Chain-Tensioner-Honda-CBR600-F2-CBR-Hurricane_W0QQcmdZViewItemQQ_trksidZp3286Q2em20Q2el1116QQhashZitem5881d9bdacQQitemZ380135652780QQptZMotorcyclesQ5fPartsQ5fAccessories My bike has 42000 on it and it runs like brand new.Change the oil, I had my valve lash checked (per honda manual every 16000) and I would not hesitate to ride it to california. It doesnt use any oil, doesn't smoke. Biggest problem with the f3s, and im assuming the f2s have the same issue is the regulator/rectifier. They dont have any cooling fins on them, and they get hot. Eventually they crack. This can be solved by putting an r/r from an r6 or get a ricks regulator http://www.gdlcycles.com/asp1/findmemodelpages.asp?qsmake=CBR%20600%20F3&qspart=Rectifier I personally have the ricks regulator and dont have any issues