Hello RCIA forum, I've been in business about 1.5 years now, and I've been a lurker and learner here for about a year, and put together my aodd system based on the great knowledge here. It is awesome, and I can't thank you enough! I have a question: I was washing a roof yesterday, and the flow out of my Yamada NDP-15 kynar/santoprene pump went to almost zero. I noticed a high pitched screeching noise coming out of the pump, and air was pouring out of the top of the pump. Does anyone have an idea of what might have happened, and is it worth fixing? Either way, I'm looking at getting a new pump, and fixing (if fixable) the Yamada and using it as a backup. My system has 300 feet of 5/8 inch hose and the Eaton 9hp/19cfm compressor? What is a good 1/2 inch pump that would go with this system? Budget is $1000 or less. Thanks!