I need a hand on this one. A friend of mine gave me this machine. It was parked for 2 years. The reason was because somehow the jug had loosened from the block and filled engine with water. I am fairly handy with a wrench so I pulled the head and jug cleaned it all, honed the cylinder, flushed all pudding from engine block, and reassembled. checked compression 125psi no throttle. Replaced battery, Coil because their cheap enough, carb, steering bushings, and repaired the ignition switch. So she fired up and ran great for a short while. All was good. Yesterday we fired it up and I rode it up and down the road several times. Also someone had hard wired the fan to a switch. so I turn the switch on and take off. about 10 minutes into the ride this thing made an awful screeching noise and stopped. It fired right back up and I drove it to the house. I found that the machine has no voltage regulator so it is not charging the battery. I think the fan had slowed and it overheated. it will not fire now after cooling off. I now am at 90psi of compression no throttle and 125psi WOT, have fire, have fuel. Could this have hurt the rings and bearings? Has anyone ever had a similar issue? or fried rings from overheating? I feel 90 should be enough for her to fire up but if my gauge wrong then I could be off on that. The engine ran great with the typical 500 slight rattle on the right side that was just enough to bother me. How would you guys move forward on this?