O.K, loved the quality of street paving suggestions. I used Rodinal 1 to 100 usually on the road. I had never developed 4X5's in a dunk tank until I worked for the newspaper. At home I tray developed with continous erratic agitation. And yes, crossing the street car tracks helped agitation, I'm sure. I only developed Super Plenachrome that way, and then only when trying to make the next edition on time. In the newspaper darkroom I had to learn how to develop in the tanks.