I'm almost ready to begin 16x20 printing. I just have a few conerns/questions. - Anyone using the single tray processing method? In theory it sounds ideal, saving the most space, but pouring and pouring and pouring would get old after I while I would imagine. - How much chemistry in a 16x20 tray? I use 2L now for 11x14, so 3L? or 4? - How necessary is a print washer for 16x20? I have one for 11x14 and love it but can't afford another one for 16x20. I have tray siphon which would work for low volume work. - Ok to handle the print with hands? I've never used tongs and don't intend to. Any other advice or suggestions would be great! Thanks!