Let me tell you something about Bob...
This gentleman has a nasty habit to cut my 35mm strip into single frame to put it into his glass carrier...
I hate that.
But... Bob made 30x40 prints which were tack sharp.
I had this issue before. Very frustrating after a long lith dev to see the final image with one corner out of focus.
Now I only use glass.
You should do so Thomas.
If you go close to Bob one day just look for his scissors and hide them !
Just to piss him off.
Otherwise you can trust him 100%.