Opening in quarterberth size
I went out to Podjo this afternoon after work and got some measurements. The opening is 15.5 inches wide and 9.5 inches tall. It starts 16 inches from the entrance bulkhead and ends 33 inches from the back of the quarterberth. The top of the opening is 16.75 inches down from the headliner and 1.5 inches up from the plywood bunk. If you can make the opening a few inches wider, that would help.
Although the access hole is convenient for quick looks and fixes, I sill prefer to jump into the cockpit locker for better access and control with tools. I have spend days in there pulling the coupling off of the drive shaft and cutting the shaft by a half an inch to making enough clearance for a max-prop. I think a couple of yoga classes prior to working on the drive train would make it seem easier....lol.
I can take some pictures if you need them. Let me know.