Weeelll, after much reading, research, and talking to the Perkins Center in Oklahoma, I think I need to remove the injector pump and have it resealed. It looks like I will need to remove the timing cover and rotate the crank until all of the timing marks line up when the key on the crank is pointing straight up. This should put #1 at TDC. The manual says removing the injectors and the rocker shaft will make this easier, but I don't think I will do this. Next, I will verify that the scribe mark on the pump flange and the engine block are aligned perfectly (they are). Then, remove the screws from the timing gear and remove the three pump mounting bolts and slide it out. To reinstall the pump, I will align the pin on the gear hub and the hole in the end of the pump and once it is engaged, rotate the body of the pump (it shouldn't take but a few mm either way) until the scribe marks line up. Bolt the pump on, put the timing gear cover back on (with a new seal), bleed the system and crank it up (hopefully). Some of the 4.108 Perking have a quill shaft and apparently you can remove/reinstall the pump without removing the timing cover and unbolting the gear.. But according to the Perkins place, I will need to pull the timing cover. Does this procedure sound correct? As always, any input/information is greatly appreciated. Thanks - Dwain