I am wondering if it is necessary to replace the locking nuts that hold down the tray in the bottom end if they are removed? What about the other nuts/bolts having to do with the oil pump? Is it alright to reuse those? Also is there a secret to mounting the oil pickup? Or do i just shove that thing up in the oil pump really well? I'm outside working on this thing right now so the faster the response the better! Thanks!