WOW! Thats alot of power in a crawler!:eek:

I wonder if im giving the stock TXT tranny too much power, if i throttle it about 1/4 i can make the entire chassis twist and then roll over backwards...

The internal tranny gears are actually mod 1 pitch, which are a bit beefier than the 32 pitch of the pinion/spur. It is unlikely that these are slipping(although anything is possible, I suppose). the instant brakes is likely a radio issue, as you stated.

It definitely is... the good thing about sensored brushless is low speed driveability, it has incredible torque - better then the integy lathe motors i was using before.

Then when you feel like hitting some jumps or ripping it up its got speed too... one of the problems i have though is without a sway bar system the whole rig twists up under heavy throttle and likes to roll

How bad would the temp rise on the HV-maxx motor if I take that gigantic heatsink off?

So...get a sway bar system(the stock truck comes with sway bars-where are yours?)

I took all of that off to get more articulation - not quite 90 degrees (yet) but it can climb just about anything. I had though about switching out the cantilever system too and moving the mount points to just use shocks, but that would have an even more negative effect towards my roll-overs

Just disconnect one side of the sway bars when ytou go crawling, and reconnect it when you want to drive fast.

IMO you have way too much power for crawling. in crawling you need torque but not that much so that your chassis is twistingfrom it. the lnly way you are going to fix thit is to gear way down. in my clod im using 8t pinion. i dont think you will find a happy medium between torque & power using a bl setup.