so i have the napa reman pump. its been on about a year, and from what i read here some have a tendency to go out about then. so its started making an annoying clicking or ratcheting sound. my question is are the guts just disentegrating or is it going to sieze on me? and about how long for that to happen? or is it just noisy and i have nothing to worry about? anyone out there have a similar story?(im sure there is)