well i used them servo's before and had no problems. i guess maybe because it was like 38 outside and turning them big wheels it stripped? i do drive it in dirt, water, track etc.... right now im just trying to get everything worked out. i mean when im at home yea i just drive in the yard and the street. i have one of them jumps you can buy out of tower hobbies i use at the house. but at my track i jump it. just haven't got to all that yet because every time i take it out, something happens im totally against shelf queens! to put alllll that money in something then let it set noooo way! i feel the same way when people build up a 1:1 car/truck and trailer it around. get out and drive it!