Shit does happen, however, they should try to make it right with you! Hear them out on there offer and see what you can live with. If they refuse then you have many options.. For instance, my parents had a 199X (can't remember) Lincoln town car converted from air to shocks, i picked the car up from a carstar and found 2 wheels studs broke 50 miles down the road because they didn't torque them.. All they offered was the 5 dollars in parts that I replaced.. I took an ad in the local paper, bad Angie's list, bad BBB rating, and made a 'free parts' ad in Craigslist everyday for a week! It cost me, but not as much as it did them, I hope!! I did the same to a Monroe brake and muffler after my girlfriend got stranded in her car 15 min after I had Monroe do an oil change... The guy swore he torqued it, (i explained that 1 inch pound is torqued, but not right) and was offered a free oil change and inspection of my oil pan threads (they had to be the problem) did the same to them, and fortunately for me, the Monroe is less than .5 mile from my house and I keep the pics of the oil and drain plug in my car, everytime I see somebody there I stop in and show Them the pics -VanDy