In Mummert's video on the rear main oil seal he said that if there was a leak while testing you could remove the seal retainer and re do it. Can you just clean everything well and re silicone everything or do you have to replace the side pieces and the rubber seal? Engine is in the car and I have the pan off, Not sure if I have a leak but thinking re sealing with Permetex right stuff black sealer might be a good idea.