Please re e mail me as I'm having problems with my ISP again.
your oval chassis looks great! (now I just hae to learn to just turn left
as for the chassis (B.M.I.) warping it would be VERY hard to do. the alumium motor mount/bearinig support disapates heat alot better than the stock Assoc setup. and yes grindinig on the stock motor cam will help stop this on the stock tub chassis.
we have had motors in the upper 200 degrees( and one over 300) on the B.M.I. chasssis with no problems at all.
please call me when you get a chance.
there will be a Yokomo SD chassis soon. Jason is swamped with orders for the TC3 and Xray chassis right now.
please be patient.