I've got my CP-31 working, finally, after acquiring it nearly a year ago. I also have the Washer/Dryer module and the replenisher module as well. I plan to use all three of them. I've tested the main processor with plain water and a sheet of RC paper, and it worked like a champ. The pump flows and temperature controls all work properly too. The mechanical hookup from the main unit drives the gears on the W/D. To finish testing, I just need an input water supply line and a longer drain hose. Then the final part will be the replenisher, and I believe I have all the parts I need for that too. My main questions are about the power and signalling setup between the three units. Can someone confirm if this is correct? 1) The replenisher has a two-prong power cord that must be connected to the 100 volt outlet on the back of the main body of the CP-31, and NOT into a regular 120v outlet. 2) There is one single three-pin DIN plug on the back of the main unit. The W/D unit has two identical looking 3-pin DIN plugs on its back panel. Both the W/D and the replenisher module need a signal from the main unit to know when to turn on. I believe the proper signalling hookup when all three units are in use is to connect a signalling cable from one DIN plug on the the W/D to the DIN on the main unit, and another signalling cable from the other W/D DIN plug to the DIN plug on the replenisher uint. From the parts diagram, it looks like the two DIN plugs are connected internally in the W/D. Neither is labeled, so I also assume it doesn't matter which one connects to the main body and which to the replenisher. Next questions are more about cleaning and normal use: 3) The CP-31 Operating Manual says that clean up sheets should be run through the processor at the start of each session. In the troubleshooting section, it calls them cleaning sheets and says to run them through when prints come out dirty. I ran a sheet of B&W RC paper through the unit, and it came out with a lot of dust embedded in the emulsion. Are the cleaning sheets still available? Or how can I keep the paper path clean? 4) If I'm going to be printing a lot over several days, is there any harm in leaving the tanks full of processing solutions? Or is it best to drain and fully clean tanks, rollers, and crossovers at the end of each day?