Copal 3S lens board vs Copal 3 lens board

[jamgolf]

I have a lens with a Copal 3S shutter. I need to mount it on a Sinar compatible lens board. I am trying to find the right board for this, without much luck. Based on search results I understand that Copal 3 hole/cut-out is 65mm whereas Copal 3S hole/cut-out is 64.1mm. Since I am having a hard time finding 3S-specific lens boards, would mounting the lens on Copal 3 lens boards work? It seems like a small difference but I imagine it's still significant enough to make a difference in the proper fit and how secure it is.

Any experiences with this? Or any suggestions?
Thanks

[Conrad . Marvin]

Worked for me to put a #3S into a #3 lens board. Just make sure that the flange or ring is snug.

[jamgolf]

Thank you. Did you use a particular ring/flange?

[BrianShaw]

Just use the ring or flange that came with the shutter. The size difference is negligible.

[jamgolf]

Thank you. I will buy a Copal 3 board and use the ring/flange that came with the shutter.