I just went out and bought a Lesco backpack sprayer, that I was going to use for spot apps of pre and post emergents. The adjustable nozzle that came with the sprayer will work great for that. The problem I have is with the fan nozzle that came with it. I was calibrating the sprayer yesterday and did a spray test on my driveway with the fan tip in. I couldn't believe how uneven the spray pattern was. Most of the water was concentrated at the outer edges of the fan spray pattern. The outer edges got wet almost right away and the middle part of the spray pattern took a while to get wet enough to even show you that water was being sprayed there. I'm getting an itch to mix up one of Tremors' Primo cocktails, so that I can spray my lawn, but I'm worried that the application will be too inconsistant for good results. I'd have to walk so slow to make sure I was putting down enough product per M, that it would take for ever. Is there anotherfan tip out there that would solve this problem for me guys? Just so you know. I have the sprayer set on 15 psi. Thanks in advace.