My mini has stopped selecting 3rd or 4th (wont move out of neutral). It does select 1,2 and reverse (seen other people saying theirs wont get into 3/4 and reverse). I have watched under the car and there is no slop from the 2 rubber bobbins holding the gearselector under the car. Its a 1983 mini sprite with stage 1 kit and 40k miles, so A+ rod change. I checked the top rod to gearbox bolt is tight.
Any ideas of anything else to check or is it now a gearbox out, strip and rebuild?