I switched back to its original off-road tyres today for a bit of fun in the park, I was glad to find that the adjustments that I have made to get it handling well on-road haven't affected its off-road performance too badly, it still handles great.
It's a shame I dont have a camera man, it looked awesome with roostertails coming up from all 4 wheels.
I was getting some nasty coging toward the end of the run, and it wasn't until I brought it back to me that I Discovered why, It had nearly doubled its weight with all the mud and grass all over it and it was completely enclosing the rear suspension and driveshafts making the rear wheels quite hard to turn.

Mud, mud, glorious mud.

Poor ESC, there's some driveshafts in there somewhere.
http://i22.photobucket.com/albums/b3...Picture119.jpg
Special racing mud this stuff, it lowers my CoG.
Well I learnt my lesson and I won't be taking it off road in the wet again, even after over an hour of cleaning it's still the dirtiest its ever been, and its been off-road in the dry a few times before.
I chucked a couple of buckets of water over it and gave it a good scrubbing then I ran it again (on-road) and the cogging has gone back to normal, the MM seems to have lived through its torture session with no long term side effects, its a sturdy little fellow.
Hot Bodies Lightning 2 Pro carbon, Mega 22/30/2, MMM, 4s3-5Ah.
Tamiya F201 carbon, Mamba 7700, MM, 2s A123 2.3ah.
Xray XT8, 1518, MMM, 4s5Ah.
Lots of boats.
fastelectrics.net