I have had two instances with my Kymco that gave me major head aches. Neither was my fault. Both bad instances were caused by other mechanics.
First, when my scooter was new, it had an oil leak behind the variator, "crank case seal".
It was fixed under warranty.
After 10,000+ miles, I decided to replace my drive belt and add sliders. I discovered I could not get the variator nut loose. Apparently the shop that did the repair used Red Loctite on the nut. I had a hell of a time trying to get that 1/2 nut loose. After trying many different approaches, I finally had to use a Dremel tool with a cut off wheel and cut the nut. Thank goodness, after cutting 3/4 the way through, the nut snapped and came loose. No damage to the threads on my crank. Got everything fixed and back together.
Second episode, today 8/28/16 I decided I would remove my front wheel so I could take it and have a new tire mounted and balanced. Low and behold, I discovered that one of my pinch bolts had the head stripped out. This was from the factory. First tire replacement and the wheel has never been off the scoot. I spent the better part of three hours getting that stripped bolt out. I tried everything. Grinding allen wrenches, grinding and tapping easy outs to no avail. As a last resort I decided to drill the center of the bolt so maybe an easy out would take hold. It finally broke loose. I barely got it out because the bolt came out almost rung in half. The bolt came out broke.
If that bolt head had been good, the job should have taken no more than 15-20 minutes.
I have come to the realization these so called mechanics that charge $80. an hour are a bunch of idiots.