Quote Originally Posted by drewguillory View Post
Agreed!

Mark, could you confirm the size of the various button cap screws on the rear vents?

The seven hex button head cap screws that are lined up in a row on each side of the belt separator are #10 (can be 24 or 32 threads per inch, the head size is the same for both) McMasterCarr sells these in black oxide stainless which looks accurate but will not rust like the black oxide mild steel button head cap screws used on the screen used cars.

https://www.mcmaster.com/#screws/=16zjxc6

The three other "oops" screw holes shown that were used to mount the plastic CO2 vent horn inside the vent are two different sizes of screw. They are phillips head, and the one small one you see is #8 and the two large ones are #10. These are round head sheet metal screws.

https://www.mcmaster.com/#tapping-screws/=16zjwx5

I can't remember off the top of my head the phillips head screw sizes for the other three oops holes on the other vent. I think those were all the same size. If you've got a high res photo of the other side you can compare to the button head cap screws nearby to determine if they are #8 or #10.