sounds like you just need to buy a new star with longer pegs. the thing is, that anything you buy is going to wear out, and alot of things close together. so, the 4stroke will last a bit longer before it happens, but cost alot more, too. and, since you are already most of the way replacing the worn stuff on your bike, that day is likely soon to come for the 4stroke, so the other guy will escape the cost on both. now, just for the topend, you would be looking at things like valve job, chain/sliders setup, piston and mabey bearings. that already pushed the cost more than the topend you just did. just my $.02