Here's the oil reservoir . It was a real mess in there. There was a 1/2 inch of yellow oily stuff on top and some partly solid crusty stuff below. Got it all mopped out and was going to remove the oil pump for cleaning. Took a long hard look at it and decided there must be a better way. Just by feeling around I could tell the pump pick-up was clogged with the crusty stuff. Of course it is nearly impossible to get your hands in there. There is about 1/2 inch of room between the pick-up and the bottom of the res. so I used a tooth brush to get at the screen. Got it all cleaned out and wanted to test the pump. It runs off a cam on the table drive to a long push rod that goes down to the piston pump on the bottom end. Not knowing what was still in the pump, I disconnected the oil line and worked the push rod by hand. As a test and cleaning fluid I just used engine oil. It puked out some ugly liquid and cleared right up. Awesome. Hooked up the oil line and pumped some more and lo-and-behold, oil showed up at the nozzles that lube the ways.Here's a pic of the pump with a mirror so you can see the screen .