Does anyone know of an engine case half bolt and stud kit? Looking over the case half bolts and a couple of bolts and one stud is necked down and the holes are cross threaded. I figure I'll need to at least helicoil 3 holes and need new bolts/studs for a few other ones. This motor was super hacked together and I'm still shocked it didn't go splodey in the short time I rode it.