2nd gear issues with 727 transmission

I dont want to say anything incorrectly so i will have see if I can find the paper work with exactly what was wrong with the valve body something to do with an adjustment screw allowing something in trans to come too far down and lock up so it wouldnt go into second gear it drove in 1st and 3rd and if we came back from 3rd into 2nd it would work, but it wouldnt go from 1st to 2nd il will try to figure out exactly what the second guy who fixed it actually did so that i may pass it along.