I still don't know why people have problems with AE shocks?!
On the latest set I built for my new BJ4 they have changed the spacers that you put in the body with the o rings which are thinner, so you don't have to skim a bit of thickness off the middle one like it says to do in Elvo's guide to get them free. The shock tops seem to get harder to thread onto the shock body the first time with each set I build, but if you put a slight angle on the inside of where the thread starts before you put them on for the first time it's no problem, takes all of 5 seconds with some sandpaper.
Bleeding them is easy too, fill to the top of the shock body with the shaft fully out, screw the top on slightly, push the shaft all the way in and tighten the cap fully, easy