Just brought home a new to me 1967 mustang. It was a roller 302 with FI tech with a 4 speed top loaded. This is my first top loader. Reverse took a little getting used to. Anyway , we trailered it home. 6 hour drive. It was in first gear on the way home. Started right up, went right into reverse and off the trailer when it started to act up. I went to put it into gear and it was like being in neutral with the clutch popped and would not let me into any gear. We pushed it out of the way and it then it went into gear and drove fine. Think this was user error? Something bound from being on a trailer in gear?