I've added a bit of a 'trench' to the bottom of the develop tank to allow fluid to better fill/drain, I've taken some video of the process yesterday but now I need to learn how to edit videos to chop it all together (I'm an engineer, not a youtube vlogger...)
Also the pinch valve is well over 10000 cycles now and still going strong, there are some small fissures on the inside of the silicone tube now but it still holds pressure without leaking. The gear train of the servo looked fine at 10k cycles so if I had to bet I'd guess the first part to fail will be the silicone tube splitting at >20k cycles. These valves will cycle between about 1 and 5 times per tank of film developed so we're already talking a lot of film through the machine at this point (>8000 rolls of 35mm). The good thing about the tube failing first too is that it's extremely easy to replace, and my aim is to make the machine user-serviceable with spare parts and repair manuals available.
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