Wow! Have any of you tried spraying this out of your Z-spray or PG when the temperature drops into the 40's-low 50's?? You can't go 50 feet without your screens being clogged up with crystalized product!! I know, Ester formulations should be used for better results when the temps get low, but the drop was sudden and I already had a tank of Momentum FX mixed up. I ended up draining the tank since it became totally useless for spraying. 3-way ester is now in there and working fine. The problem with the Momentum doesn't happen out of my 200 gallon skid sprayer with lawn gun (probably due to more dilution), just the Z-spray. I had heard of this happening earlier in the Spring, but I didn't start spraying then until temps got over 60.