It is very trickey to get the barrel and plunger back in right if you don't have the thimble micrometer to zero the rack. Here is what you could try if you have a vernier chaliper to measure in 0.001"'s At the front end of the fuel injection pump is a small diamond shaped cover over the bore for the rack. Take it off and look inside, you will see the end surface of the fuel pump and the rack. You need some one to help you hold the rack in position as you reinstall the barrel and plunger. Center the sector gear as before and hold the rack so it protrudes 0.155" out past the end of the pump housing. Not a fun job but I think you can do it. First measure from the surface the cover sits on to the end of the pump housing subtract 0.155" and set the deapth gauge to that. Then you need to release the pin that limits the rack untill you have oil pressure so the rack can move to zero. To do this you take out a small plug 3/8 or 5/16 hex app on the bottom side of the governor. This plug has a hole behind it that you can push a piece of brazing rod or small welding rod up and release the rack stop. When you do this the rack will come out past the end of the fuel pump housing as you open the throttle. Try to get this right first so you don't wash down the cyl and make things worse. I agree with you on the compression. Later Bob
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