Hi, I found a mint condition RZ67 Pro II and a 75mm Shift lens today and was wondering if anyone here could shed some light on a couple questions.

1. - Based on research it seems as if Mamiya made an RB and an RZ version, but that doesn't seem logical to me. Can anyone clear this up?

2 - When mounting the lens on the RZ 67 Pro II the shift is oriented side to side when movement is applied. I assumed it would be oriented up and down to mimic the rise and fall movements of a view camera. It wouldn't seem logical to have to put the RZ on its side on a tripid to get rise and fall, so what am I missing?

3 - I wasn't able to find a manual anywhere online. If you know of a source other than buying one on eBay, please let me know.