Rear Main Seal leak

A few years ago I built a 440 with a Indy rear main seal housing. Couldn't get the side seals to go in correctly with it. Dan Dvorak told me to get rid of the after market housing and use a stock housing.
By the way i first met Dan Dvorak in the early 70’s. We became pretty good friends over the years. He ported iron heads out to MW port size years before Mopar could spell aluminum head. We are both diabetics and used Bi-Pap machines to sleep. Unfortunately he didn’t take his diabetes seriously and he paid the price.