this is a new identifi install with 4x4 APs
the legacy Meru install was working flawlessly
the airprint server disappears after an amount of time, turning the airprint server's wifi off then back on gets functionality back
multicast settings are set to allow all multicast traffic
not sure what to adjust to get airprint to continuously work
thanks for the tips guys, the customer has implemented some kind of work around, I'm sure that your suggestions will help other people in the future, I'll put an update in here if they want to revisit it.