You just have to take your time and charge accordingly. Were some broke off below the surface? There's a guy around my parts with a portable tig. He charges $100 for the trip and one stud removal. $50 for each additional. You sublet his charges on the ticket and charge the customer something for tying up the hoist. Those 5.4's and V10's can easily get to $1000 repair bill. Oh well. You either get paid well for all the hassle or you scare them off. That's a win/win either way.