Thank you for your reply.
Resetting channels really isn't a preferred option for me. The facility has
12 APs that are set up on non-overlapping channels. (1,6 and 11). That
means that roughly 1/3 of the APs are going to need to be on 11 and
bringing those APs to channel 9 or lower will increase their interference
with the APs on channel 6. There is also another SSID/VLAN running on the
same hardware that works just fine.