I was driving down the highway and I started to smell something. I drove a little while and the trans started slipping. When that happened I knew that the car was leaking trans fluid. So I tried making my way towards the shoulder as the car went in and out of gear. I just barely made it over to the shoulder before the car couldn't move anymore. I had the car towed to my friends trans shop and he told me one of the trans lines snapped. Then he fixed the trans line and filled the fluid. I took the car for a test drive. The first and second gear work fine, but the 1-2 shift is real soft and the trans doesn't shift into 3rd or 4th now. There wasn't anything abnormal in the trans pan and the fluid was still clean. What do you think may have been damaged?