Hey guys i have a question. Took my wagon to the track for the second time ever. But when i raced it this time the car went from 1st to 2nd but wouldn't go into 3rd. It is a turbo 350 trans, 355 iron headed 4.88 gears, 1/8 mile car. But right after the run on the return road it shifted find. What do you think it could be?