This spring I will be rebuilding mr 650 r 2001 I know i need to rebuild the top end because of some compression issues, but since I am already in there I figure I might ad a few extras. Currently it is easy to start and ride, so I want to keep the easy starting aspects of the bike. I was thinking of higher compression pistons 11:1 and a valve job (larger intake) I also have stock exhaust but that will be changing next winter. I am hoping to gain more low to mid range torque with out loosing the top end. Any input would be appreciated. p.s. I also dont race but I do go to the dunes with it and I love the hill climbs.