This thread helped me a huge amount and thanks to all who gave instructions and hints. I would have never been brave enough to tackle my "half-dead injection pump" without the reading of the advice given. This should be in the "technical manual" to help all who have had a pump with dried gas cause the rack/pistons to stick.
No telling how long my pump has been sitting, and the injection pipes were off, with outlets from the pump open to all that dropped in. Pistons 2, 5, and 6 were stuck causing the rack to be stuck. As per the suggestions, I opened the side cover, and the pipe fittings/cone valves on those pistons, and doused them with all sorts of stuff: WD-40, carb cleaner, lacquer thinner, 2-cycle boat motor carbon remover gas treatment, injector cleaner, and after a week of soaking was able to get all but 5 to move with the golf tees.
I broke about 20 golf tees trying to get 5 to move, but it would not budge, and neither would the rack. So, I figured after a week, I'd do one last thing before sending the pump off to a shop. I took a small plastic tube, like a thick walled straw that is used in a hand lotion bottle pump, and inserted a small drift into it. My hopes are the plastic would not scratch the side walls of the cylinder. The drift has a flat tip, about twice the diameter of the little hole in the piston. The the tube OD was smaller than the bore of the piston. Placing the drift carefully down the bore, so I wouldn't touch it as much as possible, I set it on the piston, and gave it some hits with a hammer. The piston finally moved down, about 1/4 the way. I removed the drift, and cranked the pump, but the cylinder came up, so I had to reinstall the pipe fitting. With the cylinder back down, and the pipe fitting off again, it took a couple of good hits to get the get the piston most of the way down. Back on with the pipe fitting, and crank. Off with the fitting and now a golf tee worked, all the while keeping the 2-cycle decarbon stuff in it. A few times more and the rack freed up and moves like it should! The piston does not appear to have any imprint of the drift on its top, so if the plastic tube didn't scratch the cylinder walls, this could work.
The now pump is on the engine, timed, and I'm feel that's a major step to getting the engine back in the car and it all running.
Thanks again all, Ron