I finally found a good use for my Yankee Developer Tank It is useless for developing 4x5 sheet film but useful for washing. It is excellent for washing two sheets at a time. I fill it with rinse water and insert two sheets of developed and fixed film. The rinse water inplace makes inserting the film easier. One sheet near each edge and none in the middle. I adapted the top cover to hold the hose from the faucet in place. The hose can be extended to the bottom of the tank. Five minutes later, a fully washed film with no chance of the emulsion being scratched as the grooves hold the film in place. Has anybody else tried this?