Ok so i did something bad. I kept turning the nut to get the spur off to the left a lot but then noticed i wasnt getting anything off. Instead of replacing a gear, i just moved the motor to get it to mesh with the stripped gear cause it still felt like it was meshing properly. I then decided to take it out and thats when something weird happened. When i give it full throttle it goes so slow. I dont know if it is because i kept turning the nut to the left or what it is. If you could help me that would be really good.