Ok, so I bought the truck knowing the p/s pump was out, truck rides on 35's. PO had new rack and pinion put in a few years ago. So I went to NAPA and got a new reman pump. Put the reservoir and pulley on it, mount it, no worky. Pull off, soak reservoir in parts cleaner due to really dirty screen to soak and completely blow the system out via the low pressure line, seemed to clear s*** thru the banjo fitting on the high pressure side. Remount, works fine.....for about 5 minutes, take apart again, blow and clean, remount, lasts about 5 minutes and blows fluid back out the cap. What am I missing here?