4/speed issue

Was driving my 72 Duster 340 with A833 4 speed, as I was driving trans got stuck in 2nd gear and won’t come out, I wrestled with the shifter and can’t get it in neutral just had trans overhauled last year with hays clutch & pressure plate along with new throw out bearing, went under car and all the shift rods are snug & tight?? any ideas what might be my issue?? Thanks