Cap for vacuum pump - almost parametric

This is a top for cylindrical vacuum pumps. I have a lot of different sized cylinders with varying o-ring sizes as well. This allows me to plug in the ID and OD (inner and outer diameter) for the tube and the size of the o-ring. Its my first attempt to use parameters in F360. It's messy - especially the distances between the holes. There are a lot of ways the parameters can break - I didn't see a way to constrain inputs or use conditionals so this is the best I can do for now.

It has grooves for O-rings and holes for connectors. The STLs here have holes sized for predrill for 1/4" NPT. That can be swapped for a 1/8th NPT via parameters or just enter in whatever diam you'd like. I think G/PT and NPT have the same predrill sizes, just different threads and tapers. The holes are not tapered, but they've tapped well for me. The space between the holes is based on the size of the holes. I have two holes so I am able to add an emergency vent that has been needed often during testing.