Allan, if you want one just get it. Mike Sidonio is riding that monster on his NJP so just give it a shot and if it does not work either buy a new mount or sell the scope.
Just investigating some flex of the rear assembly at present. Might be some loose screws but when I slew the scope and look through a cats eye collimating cheshire I see some flex in the reflections. The center spot might not be correct either but I am just going to investigate this a bit better. More later.