I've run the stock type rpm stuff on a lightweight (Slayden type) Tmaxx and they've taken everything I could dish out. Only thing - if the nylon formula hasn't changed, they're very flexible, especially on a hot day. Precision type cvds (UE) will get bent with this kind of setup.

I agree though, a 3.3 setup shouldn't have any probs. Only thing I hate worse than e-clips are those phillips headed wood screw things they call screws.