4. After the cover is tightened up, the bearing cap support bolts can be threaded in till they contact the caps. These do not need to be super tight—as a matter of fact, 10 lb-ft is all that’s required, so don’t get all macho or you could distort the bearing caps. Proform recommends adding a little silicone under the lock nuts before threading them on to prevent any fluid from seeping out from the threads. The lock nuts don’t need to be super tight either, so go easy.