I'm going to see if I can get an estimate over the phone from AAMCO for a rebuild/replace. One thing that gets my hackles up is that their parts cost quotes seem to be 200-300% of what I can get that part for at autozone. They want something like $400 for the cost of the rebuild kit alone, $240 for an EGR valve, etc. The tough piece is that I'm overseas, and my wife is having to deal with most of this herself.