Just be aware that the later MC21, & all MC28 crank cases also have a small auxiliary oil feed from the pump.
This feed hole obviously does go to the fuel wetted side, as it supplies the main bearing.
If present on your engine, the blanking plate will need to cover this hole too.

I used the Tyga blanking plug on a race bike engine, which didn't cover the hole. So I tapped a thread in the hole, & used a grub screw with Threebond to seal it. Then covered with some epoxy resin, to stop it vibrating loose.