Maybe I' pushing my ESC too much :)

[killjoyken]

Aw man, I have 3 castle links! I could've just thrown one in the box with your CRT.5! Well, pm me if you want it, just pay for shipping or if you ever head down to the south bay you can pick it up.

I had an RC18 running a 9200kv on 3s lipo with very little cogging. With the right gearing and settings the Mamba 25 is perfect. I'm guessing it's your batteries. how old are they?