I actually left that side dry.
My thinking was that if I had the pan in place or nearly there, and then it dropped for some reason, that way the gasket wouldn't stick to the pan and pull away from the block.
As Gene points out, the side gaskets MUST be installed and remain UNDER the curved end pieces on the bearing caps.
I didn't want the side gasket pulling out from under the end piece and leaking as a result.
It worked for me, hopefully it works for you too! 🙂
I should add that I used a pin punch through the bolt holes in the pan to drive the area around them slightly lower than the surrounding gasket surface before cleaning it up and installing it.
(Lower of course means with the pan viewed right side up)
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