Who all have been doing on site combine cleaning. Are you all charging hourly or per unit? The market for this in my area has really started to pick up for us. Do any of you blow out all the compartments before you start the wash off? Do any of you 2-step the outside of the combine? Just looking for better and quicker ideas and approach to cleaning these monsters. It is taking us about 3.5 hrs to clean just one. Just looking for a different approach to help speed the process up. Any ideas would be greatly appreciated!!