Just got back from three shops and they all wanted to remove both heads and send them off to a machine shop to have the two butchered glow plugs removed. One said he would not be interested to R&R the heads, and another said they were too busy to tackle head removal. Diesel Truck Shop & Repair / Inland Truck Repair, Inc. was willing to tackle the head removal and repair but they said they would only do it flat rate at $145/hour as they are not sure what else they will run into. No limit.
I have been advised by forum experts to let it run on 6 glow plugs in Florida It runs great, and starts fine here in the Florida Inferno. I am afraid if I try anything more myself, it might not run at all!