I have several Eliminator 4 channel dimmers. Two are installed in a club. With everything set the same on the first dimmer, two channels dim and two don't. In other words two faders on the console dim the lights, the next two come on when the fader is half way up, no dimming. Console is OK. I'm using two dimmers and if I switch the cables around the problem stays at the problem dimmer. Any ideas? Thanks for your time....K