Hello, I have a automatic 2006 Volkswagen beetle tdi. My car started slipping/jerking really bad. I got my car towed to a shop where they inspected the a missing bolt that was for my transmission. They had told me that when they looked at my transmission it was dry. They ordered the part and put fluid. They also recommended I do a transmission service on my car which I allowed. When I picked it up they said there were no metallic flakes and it seems to shift fine. A couple days later, I am now noticing I don't have as much power in first, second and third gear. The gears seem to shift fast too. Also only when I come to a complete stop it downshifts to first gear slow and jerks a little when it shifts to first. What are your thoughts?