Newbie here! 01 F250 7.3 PSD. 210,000 and running strong. I want to pull it the shop in and fix a few oil leaks, install an AIS, and knock out anything else I should do while under the hood. Any suggestions? She starts and runs good so I'm guessing not much is needed. I expect the HPOP is the source of my leak. I have seen a kit to replace the o-rings on the fuel bowl. Is that worth my time while I'm working on it?