I used avation sealer around the ports on just the steel shim and rtv on the corners with a little wipe front and bank. When I ate a lifter on break in and had to pull the intake it was so nice after being a smallblock guy. No water in it and the pan came off really easily. I had the valley open in like 20 mins, wiped down the tray, scraped the rtv, and re-used it. Worked like a charm.

I did check the fit with one two or no paper and none fit best.