hard hot start

I had my oil changed two weeks ago and now it's taking about 8 seconds until my truck will start. Both batteries are good, FICM is at 48V, but ICP doesn't get 500psi for about 8 seconds. If I turn it of and start it again in 15 seconds it fires right up. I had both fuel filters changed last...

Ok so I am thoroughly frustrated and pissed off with my work truck. I took it to a shop that will remain unnamed because they had a couple "certified ford diesel techs" and the truck was acting up. Before I get too far my rig is a 2003 F-250 cc lariat fx4 4wd with the 6.0l. Only mods are BPD...