Wow Solo, this is a tough one. You may be right about the shop. Was hoping we could diagnose the prob remotely but sometimes you just gotta be there. If you come up with more symptoms let the forum know. There's loads of really smart and experienced people that will chime in with their experience. I'm not really experienced, just curious. Send best wishes to your friend and like I said, check in.
2013 F-350 CC SB 2WD 6.7PS
2013 Eagle Premier 351 RLTS
-SOLD- 2012 X23B
-SOLD- 2003 Ford Expedition 5.4, Bilstein shocks