Hi all, I just acquired an inexpensive and relatively clean-looking but also very large(!) Durst RCP 40 Vario (I'd been looking for simple 11x14 colour print drum, didn't have any luck, so I bought this on a whim). It did not include the instruction manual and I cannot find it online. Just wondering if anyone has any clues how to use it? Would it be appropriate to run some test paper through with plain water in the tanks? So far the best info I could find came from this French-language forum. The poster says he had good luck using it for RA4 and it takes 5 litres of both dev and blix. He advises emptying the chemicals and storing them in an airtight bottle after use, rinsing the tanks and making sure the inlet rollers are clean: http://objectif-argentique.com/forum/viewtopic.php?f=8&t=78 *update* I decided to go for it. it runs. Still wondering if anyone has any more info that wouldn't be intuitive.