I ran out of generic 3 lb. gramoxone while spraying (mixed with diuron), so called and had delivered "Parazone".  It created a goo that stopped up all the screens.  Cleaned out the goo, and tried gramoxone inteon.  The goo is worse.  I don't think the Clean Shot diuron is the problem, because I've sprayed it before with no problems.  Anyone have any suggestions on how to stop the goo in Gramoxone/diuron.  There were no problems until I ran out of the other stuff, but it is unavailable.