My son has a 2009 65 SX, and it seized up practicing for a race last week. I usually do most of his maintenence myself, but we just moved to Western Washington and I don't have access to all of the tools I need anymore. I knew it was the bottom end, and took it to a local KTM dealership. They said when they drained the oil they found "pieces of the transmission" and quoted 2800$ to fix it. I cannot imagine what could be wrong to that motor that would cost that much. I called another shop that was unaffiliated and they quoted "around" 2500$ over the phone. I'm going to send it off to Pro motion and have them look at it. My question is, what is the worst case scenario, and assuming I buy tools and do it myself, how much COULD it cost. I have to admit hearing that its basically totaled scared me. I've never heard of ANYTHING costing that much to fix on a small 2 stroke. Please advise on what could be THAT wrong.