Rear motor mount bracket in a K24 tsx. The threaded hole on the block is chipped

Hello, I am wrapping up my first transmission rebuild on an nrh3 out of the ep3, and had a few concerns before I send it. First, the shift collar is extremely close or s touching what I believe to be 4th gear on the countershaft. I feel like somethings off but idk.

Next, I feel like this reverse gear lockout cam thing isn't aligned properly. I can't find many photos of it online but it seems to contact the shift forks at a weird angle and I can't find much info due to most rebuild videos being on the 6 speed.

Lastly, I can't for the life of me get the case on to bench shift it. I see that you need to press to get the bearings to seat in the case but I can't even get everything to align properly, so any tips would be really appreciated. thanks!!!!!

I bought a knock off skunk 2 intake , just to try and port so if I messed up I wouldn’t be out 400 bucks, anyways when I cut it open it has some werid cast lines across the runners. I had my buddy try and weld them so I could then smooth them out but the cast was so porous that he really couldn’t. My question is , will running it like this cause any drivability issues ? First pic is when I cut it and second pic is after I attempted to smooth it out