Kenwood NX-3320 radios and scan

We have about 50 radios and they are set up so that channels 1-7 are different departments
channel 8 is an “All Call”
channel 9 is “Emergency”
All radios are locked to always scan 8 and 9

The radios were just updated to these settings

The problem we have now is that people on channel 1 for example will miss calls. I can key up and call the Maintenance and 6 guys can be standing there together or apart and 4 may hear it and 2 not. Happens randomly all the time on all channels

This is the settings and where they are at the way the distributor set them up
Look back A .5
Look back B 2.0

Global Options
Dropout delay time 5
Dwell Time 5