Ever since my HR34 install I seem to lose the swm very frequently. I have to unplug/replug it and then I get a signal again (for a bit). I thought it was due to having an hr34, hr24, and hr21 on swm-8 (even though one tuner was disabled). But, even after unplugging the hr20 I still have an issue. What I frequently get is the other receivers work but the hr34 doesn't. Bad swm?