OK my bike is now 5 years old. it has been great and has never let me down. i have decided that i want to keep it for another 5 years. i am installing a set of hot cams on it. it has a full ti GYTR pipe. what else should i do. it has a lot of hours but seems to run very good still. SHould i put in new valve springs. maybe stiffer ones. I ride in the dezert opnly and need to know what things to look for that might be worn out. Also when do i know the bike needs a top end?