I have a 70 Stage 1 with M22. It is stuck in 2nd gear right now. I drove it 15 miles through traffic lights to the tire shop this morning. Put new tires on. Drove it out of the parking lot and through a couple traffic lights. Reverse and 1-4 all worked fine. Then at one light it got stuck in 2nd. This is not the first time this has happened. Last time was over 2 years ago, but I rarely drove the car, and I think it was stuck in 1st. I crawled under the car and somehow managed to wiggle things loose... not sure what I really did. So, where do I start? Is it likely the shift linkage/rods? Could it be internal?