Hello I rebuilt my blaster top and bottom end a year and a half ago and put a good 300 hours on it and have been very satisfied with it, but my wiseco piston decided to go south, I'm very satisfied with how long it lasted but I have one question when I rebuilt it, I had ken redo the crank for me and was wondering if I should get it rebuilt again or put just a new top end on it, it has no play up and down and a little side to side like it should, if I put a top end on it, is there a ballpark range on how long these should last? Thanks