8ight T conversion

I do not have an eagle tree system. I don't think that my 9XL is running fast enough to think that it is mislabeled. It's not as fast as my 8XL.

Believe me, this 1512 is mild. Really mild. Geared 14/46, I can pick the truck up off of the ground and it's barely ballooning the tires. I don't know what's up. I did run it on 5S for a couple of minutes and then I was performance similar to that of the 9XL on 4S.

Could it be that I got a bad motor? If I did, how would I tell. I mean, it's a motor. Either it's running or it isn't, right?