Front "China wall" sealing issue on SBM

First time I put my RPM on my 340 I didn't get enough RTV to fill the china walls. Yes it's a big gap, that's why I just used the cork gaskets there. Cleaned the area real good and put the RTV on the wall and bottom side of gaskets and let sit over night. That way they won't squirt out and hold firm. Next morning RTV it real good especially the corners and skimmed the intake on each ends and around the water ports. Sealed up real good with no leaks.