The RDX drivetrain is super smooth and free out of the box. If you are looking for that last extra bit then read the tips below that we do to make our cars perform at their best on the track. Always wear safety glasses when using power tools. Be sure to click on images for close up views. Insert the bearing holders in the down position and check for tightness on them. They should slide in and out with ease to prevent the bearings from being pinched once inserted into the bulkheads. If the holders are tight you will want to dremel the bulkheads a bit. Due to molding tolerances on the bearing holders this is sometimes necessary. You will want to start with a coarse bit if the holders are tight to help in the process. Then go back with a smooth bit to finish it off. Alternate holding the bulkheads side to side to keep the dremeling even. Be sure not to remove too much material, this can cause the holders to rock too much in the bulkheads. Do not dremel the notches. Once completed you will have a matched set of bulkheads to holders. Do not mix them up otherwise they may not fit as smooth. Once complete you will want to spray everything down with Motorspray to remove dust and debris. Check holders one final time with bearings installed. REBUILDING TIPS If rebuilding a car, be sure to check all bulkheads on a piece of glass for flatness. Glass will be the only true flat surface unless something is ground down to tolerance. Check the bearing holders for dirt and tire dust buildup behind the bearings. Clean out the corners with an X-acto knife to insure they sit down in. MAIN MENU