Front to back is probably a little out of spec. I haven't measured it but I'd say .010" to .015". Its enough to feel it. All my 625's have end play that is barely noticeable.

It also can be rotated just a bit more when locked like you're going to shoot it so clockwise counter clockwise.

Then it is quite noticeable when unlocked the cylinder is loose on the shaft off the yolk. Almost like its worn out maybe? I'm not sure maybe I can take a video and post it.