added after video - HiTec HS-65HB+ mighty feather servo with Karbonite gears and it fit right it without modification. Also added 70w shock oil and the bounce is gone. It rebounds nicely without hopping back up. 50w was still a little too light for my taste.
Parts found here - https://wheelspinmodels.co.uk/c/791/
Wheel adapter found here - https://www.ebay.com/itm/MAVERICK-ION-Wheel-adapter-to-1-10-standard-hex-tires/122888096140?hash=item1c9cb3898c:g:O-gAAOSwqrtWo69H
Best Buys site - https://www.bestbuy.com/site/redcat-volcano-18-v2-electric-monster-truck-red/5655309.p?skuId=5655309
