Craig, Remember that these have now "Been around the block" and any number of things could have happened! I will not say that your transmission isn't bad, but the aluminum glide did come in the early Vega's [you said Kammback, that was only referenced from the factory for Vega] and someone may have swapped in a " 'glide" from another Vega not knowing that it was a 2 speed, the shifts from those seemed like they were missing a gear. Also possible was a shifter swap from a three speed car. And of course the tranny could be bad, just climb under the patient before you are set on a "diagnosis", that is all I am suggesting. Harry Wikipedia:https://en.wikipedia.org/wiki/Powerglide , Pan Gasket for reference:
https://www.summitracing.com/int/search ... powerglide And Yahoo Images:
https://ca.images.search.yahoo.com/sear ... .yahoo.com
I'm not a hoarder I'm a preservationist 78 Monza Spyder (~Soon(ish +/- I guess) To Be 2+2 with Spoilers)