Well, I put the Combi Tank to use over the weekend by developing four sheets of Tri-X exposed at 320ASA in HC-110 (7 mins, 21oC)- came out really well - thanks for all the previous comments on how to use this tank. Now, my question. Two she ets of film appear to have been reversed in the film holder - i.e. I exposed on the base side, rather than the emulsion. (I can tell this through the orientatio n of the film notch) However the images have still come out extremely well. I ha ve been puzzling over this, because intuitively I would have thought that, with an error in loading the film holder, I would have ended up with a blank, or at t he very most, a very poor quality image. Does anyone have any insight into this?