Yes, the side to side balance is a problem (more so than front/rear IMO) as the 8xl and the heatsink combo are about 600 grams, way more than the servo or anything else you want to put on the right. The trakpowers are exactly the same weight with a battery mount, so the side to side balance is perfect on my truck. The rear bias is barely noticeable, but i think most other MTs or truggies have a slight rear balance in stock trim. Driving it around my yard (4 acre lot), the power and handling is awesome, and the rear bias is not noticeable to me, but I have not yet had it on a track. In the end I would rather have it lift the front up a little than nosedive.