Brake fade?

[bdebde]

I was doin a little parking lot bashing with my buggy today, with a new set of road rages on it. After running a while, the brakes seemed to "fade". I cranked up the brakes on the radio from 75% to 100% but that only helped a bit. Normally, at 100% the wheels lock up, even sometimes at 75% if it's a bit dusty. I have the brakes set to 75% (*edit: it is only set at 50%*) in the mamba settings. I think it may be running a bit hotter now as well, not sure as I was about done with that pack. I did try it again later after charging the battery again, but still kinda soft brakes. I am going to doublecheck the settings again and see if any difference there.

So, do you think I lost a fet or 2. I suppose the brake fets are not connected to the heatsink (anybody know?)? I am just getting this rig dialed in and hate to send the Mamba off for repair now. Guess I better get a spare Mamba just to have around (have em in 3 rigs).