Plastic to metal tracks

I purchased the metal tracks, sprockets, and idler wheels for my next door neighbor Heng Long Challenger tank to help him modify his tank because we do our tank battles...read moreI purchased the metal tracks, sprockets, and idler wheels for my next door neighbor Heng Long Challenger tank to help him modify his tank because we do our tank battles in our back yards. His plastic tracks kept stretching and started coming off every few minutes. So we switched out everything but the road wheels. It only took about 20 minutes with him doing all the work, so now he's happy, I'm happy because now we can have our little battles, and he now is more interested in doing more modifications and I now have a neighbor interested in the same hobby as myself. The tracks, sprockets, and idlers fit perfect. The only issue was the screws to attach the idlers were the wrong size to fit the track tensioner, but we were able to come up with screws that worked, no big deal!