exceed forza

Hello everyone! I'm a bit of a noob when it comes to RC cars and stuff, however just had a quick question. Yesterday I was running my Exceed RC Forza with the .18 engine and two speed transmission. I was running it up and down my street when suddenly the car stopped and wouldn't go into gear. As...

I have an exceed forza, as running it the other day and it started reving but not going anywhere. I look at it to see what is wrong and the large gear teeth all but the outside edge had been worn down flat. So I replaced it and it roller smoothly until I started it up and gave it some gas. It...