I'm trying to knit Surface Knit 47 with Offset 11. Solidworks rejects it and I'm not sure why, so I'm afraid that I've approached the last few hours of work with a flawed understanding of surfaces and am in dire need of help.

Essentially what I'm working with is 3 different bodies. The outer body is obviously the outside of the enclosure, then there is surface offset 6 which is the part this enclosure wraps around. The wall thickness increases at the top of the tool which is why I wanted the rib section to increase protection but keep wall thickness to 2mm. So I added offset 11 which is a 2mm offset from the outside which I want to merge with the rest of the part in order to create a solid body. Evidently I've done it completely wrong otherwise I wouldn't be facing issues.

I've tried for hours to figure out why Solidworks won't knit the two surfaces together since they intersect, I thought that was all that was needed. Am I misunderstanding how the knit surface feature works? Could someone explain to me how I can fix this problem?

Also, what is the best way for me to fix the gap in the model where the rib section meets the front face? The surface is not planar there so I am struggling to find a clean fix.