I have just purchased 6 used SpectraQ3's. Addressed the scrollers to channels 30 through 32, & 36 through 38. After connecting the 4 pin cable and powering on the PSU, the Scrollers go through self calibration. Several off them still don't quite line up to the 1st gel frame, but they appear to function. More importantly, they are not responding correctly to the DMX signal. One of them (though mapped to 38) responds to DMX Channel 6 - almost like I never cycled DIP 5? I brought them all down, and then started trouble shoot by going from PSU to 1 scroller back to PSU. Still the erradicate response. Tried alternate channels on the PSU - still the erradict reponse. Tried a different board - still erradict response. Tried to remap them to a lower channel (something less than 16) and they would sort of respond, but still very erradict. Tried to map them to a higher channel (something 64 & higher), and yep, you guessed it, still the erradict response. It is almost as if everything from Binary DIP Switch 5 and up is non responsive I should mention that I do have 1 chain of of QTY 3 Apollo SC 7.25's ( mapped to 33 - 35) on this same PSU on their own channel (and swapped their channel to troubleshoot the PSU as a just in case) and the respond beautifully. Q1) How would I manually calibrate the scroller so it correctly aligns to the 1st and last frame? Q2) How do I get these things to respond correctly to the DMX signal? Is there an internal fuse? Am I missing something simple? Control System: 1 Enttec Pro Dongle with Chamsys MagicQ Latest build. Alternate control Lightronics TL2448 board. Many Thanks.