Very happy with the service. Wally and Sons were able to squeeze in my son's S10. It was really running rough. Turned out to be spark plug #4, which was stuck in place in the head. I was afraid to un-thread it for fear of snapping it off in the head. They were able to get it out of the head without breaking it off, but the threads were messed up in the head. They installed a thread saver insert into the aluminum head, for a VERY reasonable price. As I recall, it was only $136 for the thread insert. The truck runs great now!