Good evening, I got my new Mamiya 645 from post today. Nice camera. I have shot 2 rolls of Ilfords PanF plus. I thought of asking any tips on 120 developing, before I go and mess up with my negs. I have done only 35mm developing before, anything I should do differently with 120? Btw, any thoughs about developing time, dilution, etc? Or should I go with the massive dev. chart's way, 1+50 11min 20C. Thanks!