I just stripped out my son's (TT125L) oil drain plug. I over tighten it. I removed the bolt and spirals of metal came out with it. The bolt is ok but the threads on the case are damamged. I fished out the damaged threads, flushed with oil and then reinstalled the oil plug. So far so good. Possible fixes. 1) Rethread the case to one size over and get a bigger drain plug bolt. 2) Buy a new side case ($) 3) Maybe helicoil Any thoughts or experiences would be helpfull. Thx in advance.