I have an EPMP AP at 5770/20mhz on latest firmware. I have four SMs (all integrated) connected to it, also on the latest fw. I have the power levels on all four set to manual. I have each one set to Output power 21 and antenna gain set to 14. However, on the home screen of each one, I get a different reading for one radio. Two are at 21/15, while the other one is at 18/15, (one is offline right now).