XY Calibration issues

So one of our Fuse 1 machines have been acting really weird lately. Im asking here aswell as opening a ticket since the response times seems to be a few days now.

I noticed the accuracy in X/Y was quite off so i ran a calibration. Measured it and was trying to input the results. The number 9 measurement was so off that i could not enter the number on the printer.

It says the value is out of range. I thought that something had happened when blasting the parts so i repeated the XY calibration print.
Same issue again. After 3 calibration prints without being able to adjust the nr 9 measurement i reflashed the firmware.

Reprinted and still the same. I tried to up the value to the first acceptable number wich was 88.50.

Started a new print this morning to see if it adjusts more so i can actually input the correct value i get from measuring.

Has anyone else seen this? If yes, what did you do to solve it?

If i get a response from Formlabs or find a solutiion i will post here for future reference.

Just thinking out loud but maybe have a look at your upper laser window. I had one of the early ones that leaked a clear residue onto the glass that caused some weird distortions in my prints.

Well, tbh i don´t think that is the case here as the upper window is clear as day according to the service techs who was here a few weeks ago.