I've got an Rt valve that I was having velocity inconsistencies with. So I took it apart to replace the L10 oring and rebuild the reg. Piston assembly.

The issue came about when I went to screw the two valve halves back together. The hash marks are not lining up. At first, I didn't think this would be an issue as they are not that far apart. But when I install the valve, it is clearly not rotating enough to allow the alignment between the on/off and the sear. And this is a valve with matching serials.

This valve worked just fine besides the velocity issue until I took the two halves apart. So not sure what happened or what I did wrong. But any help or constructive criticism is welcome at this point. I can take pictures if need be. But that will have to wait until later tonight.