How would they see more shavings after the put it on? All they need to do is clean it up and replace the parts that need to be replaced and put it back together. what are they making a lab rat out of your taurus? I just hope you get a warranty with it. Most people get their car back within 5 days. If it is a confident shop they should have no trouble showing you your parts and exactly what is wrong. I got to get a tour of the garage and saw my tranny on the bench with like a million pieces all laid out in order. It was very clean where they were working on the internals. I called 2 times a day for 4 days strait and the guy was cool about it. I wish you luck on the outcome of your tranny and don't be afraid to be a snoop. It is a large amount of money that you are spending there and the shop should understand that.