I use the rc-monster rear cover. I just put some duct tape or electrical tape over the front holes. The rc-monster aluminum plate doesn't fit the new Neu motors now. I believe the new batch of motors only has a .75 shaft. I originally had a 1515 1y and the aluminum plate worked perfectly. I believe that shaft was 1 inch. However, I switched to the 1512 and the shaft is shorter and it won't work with the aluminum plate because it won't leave enough room for the pinion to grab.