Of course the day I have planned to spray a 500k industrial park my sprayer goes crazy. Halfway through this morning, I noticed the left side drippling, SO I assume the screen is clogged, I get back to the truck and pull the tip off and clean it all out, start up and still no spray, just dripples. I shut off the right side and try to bleed the left side and hey it works, it starts spraying again, off I go. Halfway down my first pass I look down and its drippling again, So I close that side, and spray back to the truck. For giggles I shut off the right side and turn the left on, it works, I shut off the left side and the right side works, So theres no clogging but both sides dont work together, but each side works alone. Any Ideas? I know it the holiday weekend, I plan on looking at it on monday, I m guessing the pump is loosing power and cant get pressure to each side. I believe I have a spare pump in the shop.