I carried my pump to a hydraulic shop this morning.. tore it down and could not find anything wrong with it.. measured all the bushings.. exactly .625.. measured the shafts.. all were .6245 and one was .6243.. I cant believe 1/2 of a thousandths would affect anything... i'm guessing these were made this size to allow a little oil flow between the shaft and the bushing.. all the o rings and seals were fine.. no metal shavings, nothing.. pump looked brand new... I have had it for about 6 months so it should... well i'm going to buy another one.. dont know what else to do..what pump do most of you use? this one was a mte.. I have had barns and had good luck with them.. thanks!