transmission tools

hey guys !
just having a quick issue here ! first of all my transmission is gone, kaput, and I will attempt the repairs myself.
transmission 091, mounted in a 1970 westy. manual transmission of course,
i got my manuals and stuff and i am looking right now to open up the transmission, got the tool for the adjusting ring, now I need to remove the nut from the pinion, (socket ordered) than now i need also the tool to adjust the pinion depth, cannot find the tool anywhere, can i build it somehow ? my vw dealer has none of those tools and no manual transmission shop repair in the nearest 1000 km of my home.
could someone too measure their vw 385/17 measuring plate ? so i can figure out a way to build it ? thanks in advance guys.