Thanks Meru for detailed explanation. Seems like SSAG is not a match for OAG, simliar to Z match I guess. I originally thought that the oag prism or optics could have been out so I used a laser 1.25 in to project back through. Pretty rough test but at leas gave some confidence that optics is not the issue. I think that distance to focal plane is the issue something that I cannot really change a great deal with SSAG.
