arrived today and i have already played with it. It is calibrated at 5 mph but I think that 2-3 mph for tight yards is more my pace until I get use to it. It also came with purple nozzles that put 1/3 gallon at 5 mph per 1000 sq ft. My question is what nozzles did you guys change to, how fast are you running, and how much are you putting out per 1000 sq ft. I want to put out around 1 gallon per 1000 at 3 mph. what nozzles should I use?