Sorry, I don't have any revealing pics. Currently, we run a Mosmatic 21" 3 bar w/ vac on an 8gpm. We clean the outside at about 8gpm 3k psi. Then, we have our new espec unloaders on QC, and switch to an unloader set at about 1k psi. Before that we just cut the throttle way down on the engine and left the unloader alone. W/ the same size nozzles and lower rpm, we got a nice low pressure. We also run two 12" 2 bar Mosmatic on the same machine w/ the switched out unloader. You can just adjust the onloaders rather than tie up two.
We are working on a few new set ups for quicker transitions.