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Scott Drake 302/B302 sump leaking from rear main -anyone have this issue?

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My new Scott Drake Boss 302 sump is leaking from the rear main seal. It's basically a new motor with 100 miles on it.

It has a Felpro one piece rubber gasket on it. Late model motor with the one piece crank seal so I could discount that somewhat I think. I used some silicone around the outside edge when I put it in.

When I assembled it, I noticed it leaking with just the assembly oil in it, so I pulled the sump and put Dow Corning silicone on it. Even though Felpro say it doesn't need it, I did think the radius of the seal on the sump itself was a bit off. I used the silicone both sides of the gasket and packed the corners a little bit.

Before I drop it again, is there an issue with the sump pressing? I don't want to just keep adding silicone if it's not going to ever work.

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