Sealux extension ring for Canon 14mm lens on 5dII

Does anyone have experience using the combination of Canon 5dII with 14mm lens in a Sealux housing?

I'm trying to work out the port / extension ring combination and thought I had it sorted but I must not have the extension ring length right as I'm getting the dome in the frame.

Sealux recommends DOM 200 + ZR 45 for the EF 14mm f/2,8L USM and *I thought* that's what I have.

Your assistance is greatly appreciated.

I've heard back from Jurgen at Sealux. There is an error in the Sealux port list. The recommendation for the EF 14mm f/2,8L USM lens should be DOM 200 + ZR 28 extension ring.