DrAllis....So far all I've done is removed those balls to see if they were stuck. They were fine and undamaged. I put them back. All the pump pistons are fine and go up and down smoothly. I did remove the adjuster screw sleeve and all it's parts and they looked fine too. I removed the cam follower with the bad roller and am going to make a new one on my lathe. I did just hit the starter yesterday while looking at the cam and it does spin and faster then I hand thought. So that eliminated that. The pump was working fine and letting it set one season it just wasn't working anymore. All the linkage was fine. That control linkage assembly at the rear of the pump,does it get lubed with the hydraulic oil or take it's own separate different type oil? I'm about to buy a used pump ebay because I'm getting fed up with it. Thanks for replying.