Vince, there's a very good possibility that the problem is in the shifter itself and NOT
in the transmission. When they wear, Hurst shifters are notorious for gettiing stuck between gears. Usually between 1st and 2nd, but it can also get stuck between 3rd and 4th as well.
It's happened to me MANY
times in the past (usually when I'm all dressed up!!), and you have to crawl up under the car to get it released.
As a matter of fact, I just bought a new kit to rebuild the one in my 68! It's not hard to rebuild them and there are a few sites that give good instructions. HERE'S
one from Yenko.net, and HERE'S
another from one of those "other guys" forums. (same basic shifter)
You'll need a kit and HERE'S
where I got mine (P/N INL10199) for only $22.00 plus shipping. HERE'S
the specific page... (bottom left.)
Back in the olden days when I was young (yes, we had cars back then!), Hurst would rebuild your shifter for free if you brought it to a show, swap meet, a racing event, etc... If they were there, they would always have a few employees that would rebuild your shifter while you wandered around. You can still get it rebuilt by Hurst, but it's FAR from free now. The last time I checked, it was around $200 for them to rebuild it. And really, all it requires are new shim plates. Go figure. However, if you want them to do it, fill out the form on THIS PAGE
and in a few weeks it'll come back ready for another 20 years!