Adjusting 4 speed shifter

Does anyone know how to adjust the rods on a 4 speed in a 69 Barracuda? I know about the slot at the bottom and sliding a pin through the holes, and adjusting the 1-2 and 3-4 throws are no problem. But what about the reverse lever on the shifter. There is no hole in it, so when sliding in the pin to adjust neutral on 1-2 and 3-4 the reverse lever must be either all the way forward or all the way back. All the way forward makes sense, but with that lever all the way forward, the rod is way too long. I am a good mechanic, I've just never done this before. Thanks in advance. Mike.