I have shot two rolls of Ilford Delta 400 120 in my Hassy. I presoaked on both occasions for about 2 mins. (an old habit of mine). When I dumped out the water to put in the delveloper, a bunch of black crud came out with the water. Both rolls were almost completely clear, almost as if they had not been exposed at all. I have no experience with Ilford films, but I checked my camera out, and everything seems to be as it should. On the second roll I even pushed the development time a bit (Ilfotec DDX, 8.5 min. at 74%F) and still no images. This is making me crazy! Should I not be doing the pre-soak?