Thank you JayJay for your patience. Now I got you with the different play.
Yesterday I did the work on the transmission that I was able too. Letīs begin with the bearings inside. As you can see on the pic "shim bearing" I did put a thin shim between the bearing and the spider case, because the bearing has worn out the spider case. Because the bearing was loose, I glued it in with a special bearing glue. I should have taken 2 shims.... but anyway, now it`s too late. Then I glued in the race of the bearing on the right side. My transmission have different sizes of bearings, the bearing on the left side is a little bis smaller than on the right side. First I thought, that Ford build it that way to avoid Dummies like me from mixing up the right and left side, but when I look at the part list, they should be identical. Maybe somebody used a "repair set" with a sleeve at the left side and therefore a smaller bearing. Anyway, it fits good and the bearing glue should do a better and longer lasting job than punch marks.
Today I disassembled the Torque tube from the housing to set the pinion backlash. By that, I realized, that the Bolts don`t have holes for a safety wire as original. One bolt was already loose, one was not really tight. I drilled a hole in every bolt head and wired them when I finished my work. After I pulled all bolts out, I was able to pull the torque tube together with the pinion out of the housing. The pinion bearing cup was so loose, that I don`t have to use force to pull it out. You can see this at the pic "Pinion Race". After that, I put both of the axle housings back on the banjo to see for the play. Again no binding (I should have used two shims, but it`s already glued). But no play, too, all real snug fit. So I decided to reassemble the transmission with good hope. It definetely will run better than before. All bearings are fixed on their shaft now, all races on their housings. At disassembling I noticed that they don`t used any gasket, nor sealant at the banjo and torque tube. Bolts were loose, some threads that bad, that I tapped a metric M10 instead (that was easy and very tight). I will let you know, if my work was good enough or if I make big mistakes and do have now 1 gear forward and three gears backwards
But that would be no defect, but a feature
But it will need some weeks if not month, to put this all together again (it`s a frame off resto)