I wonder if some of you have hints for using and maintaining wireless microphones. At church we have an almost-new one, I think it's from Shure, and it gives us lots of problems. The biggest problem is static, and I haven't been able to duplicate it when the priest isn't wearing it. The pastor thinks it gets static when the batteries get low, and I think he's not seating the microphone plug fully into the socket on the transmitter. I've tried wiggling wires with the microphone turned on, and I can't duplicate the static.
Any hints?

-Joe-