Well, I pulled it off today (lack of room to remove it forced me to take it off in two parts (3 of 4 bolts snapped off in the exhaust housing when removing the can, but will deal with those Thursday)
Soon as I got it off, the shutter pulled right out, Looks like it was snapped off halfway up the rod? (This would account for the problem I had this spring if the shutter moved and got pinned closed temporarily). I have had my epg disabled for the last almost 2 years so the warmup don't concern me too much. I also have been running the egr delete from otr for the last 3 or so years (works great).
I am somewhat ok with just using the engine brake only and not the epg brake so I may just make a plate up and delete it for now until I get stateside again for a cheaper rebuild kit on it. I will look for the restrictor as well. I just got it off and had to leave so I never had any time to snoop around it yet.
I also finally pulled off the compressor to replace my rusty inspection plugs (found a machine shop that makes them on an as needed basis for a Volvo dealer here).
While under there, I am replacing most of the exhaust pipe under the cab (leave it to me to do three projects at one time) lol.