Hey I'm sorry for starting a new thread. I already checked the other threads but found no help for what I'm asking for. And it doesn't seem people respond to those threads very often.
Anyway, I have a tamiya 415, I think it's the original one. I'm not sure what version it is. But I currently have a small 48 pitch spur gear in it. I tried to put a bigger 64 pitch that came off of the 414. But it doesn't fit. I think the 64 putch spur is only like 94 teeth. Does anyone know how I can get it in, or is there a special gear I need?