We have a 36EXT at work, I am wondering how often other Epilog owner's find they have to align the optics. It seems like we are having to do this more and more.

If you are familiar with 1,2,3,4 on the table location, we are spot on the crosshair on 1,2, and 3, but the number 4 location is off slightly. Not sure if I want to start using some loctite that can still be broken free to try and resolve the issue. I can get it back on dead center with about a 1/64 or 1/32 of a rotation of the one allen screw, but aligning once a week?

I still think our tube is dying but it has only been in 14 months.