Damn oil leak, Rear main??

When you get the seal out; inspect it very carefully.
I had my block line-honed, and within a couple of hundred miles I had a leak. I said to myself "hunh" and simply replaced it. A couple more hundred and the leak shows up again. Now I'm pissed cuz I know I did everything I could to make sure it wouldn't leak.
So I went and dug up the first leaker, and lo and behold, the reason for the leak was right there staring me in the face. The lower half was heavily worn, and the upper had no visible wear.
So I deduced that during the line-hone, somebody got a little carried away..... and the main-cap was forcing the upper half up and off the crank.
So I pulled the second seal, and it looked the same.
So I went and bought a rope-seal off a 383, and fit it into there, badaBoom.

So I took the seals to the machine-shop that did the work. The shop that just decked this block, and fresh-honed the cylinders.
You won't believe what the manager said.
He said that if I would supply another block, they would give it a line-hone no charge. but
I would have to pay for the decking and the boring and the honing.
You're kidding I said, among other words.
Needless to say, the rope seal has been seeping ever since, but not enough for me to do anything about.
And I never recommend that shop.I don't diss them, I just don't recommend them.