5 friction/clutch clearance issue in a 904
Alright, so mystery solved. I pulled everything out, dried it off, and measured my gear. The frictions were .061" and the clutches were .068" (exactly what 70AARCuda said). So I thought maybe it had something to do with my new 24 spring return module.
The snap ring that I received with the 24-spring return module was a double wound type. I'm assuming it is for an alternative clutch/friction setup. It was taking up WAY too much space for my setup. I swapped it for the original snap ring and the 5 clutches/frictions fit perfectly now with my stock drum. I have dried everything out, and the frictions are now soaking in ATF.
Thank you all for the help! Sorry I was a dingus and didn't catch my mistake earlier!