We run 2 Z-sprays. On one of them I can set the regulator to my desired psi and other than the occasional "tweek" it stays pretty constant through the day. The other one I can set and may have to reset 2 to 3 times per lawn and depending on how many bumps I hit the pressure can vary greatly on the dial. It's beginning to get freaking irritating... My question is Is there some type of adjustment I'm not aware of that might make the pressure remain more constant...perhaps a screw that needs tightening or something? or Do I just need to order a new regulator from LT Rich? Any shared knowledge others have would be appreciated.