Sage - I made a pin tool by using a Crescent adjustable wrench (metric of course :) ). I drilled through the jaws and pressed in solid pins. Buy a cheap wrench and they are not such hard steel.
You can make the bleeder tool for the comp adjuster on a lathe. I made blocks for the shafts and bodies on the lathe too, if Race Tech ones weren't appropriate.
The piston bleeder I made out of an old 46mm piston, with a really thick washer/shim combo on the compression side and a light shim on the rebound, mounted on a T handle. You need a 50mm for the PDS, but hey, I'm sure you knew that.
The resevoir piston depth setter I made from rod with a file handle on it and a drill depth stop on the shaft.
As far as I know you have to buy the genuine tool for recharging the nitrogen - you could make one but it would be a PITA.