my linkage was binding up, causing the pivot at the transmission to not seat in the proper detents, hanging the valve body between gears. when I ended up putting the old cable
back in(pin/bolt lined up on the exact marks it came off the trans), it wouldn't go past neutral and would only go to the "2" on the indicator. I had always had problems with the key not turning in neutral, so when I unhooked the hard linkage at the cable bracket on the trans, everything started working as it should.
maybe you have a different setup than I have, and it may be getting you confused. do you have this bracket on the trans where the cable hooks to?
View attachment 112924
the flat side is where the cable attaches, and the "U" is where the linkage to the steering column goes in. if you have this, try unhooking the hard linkage in the "U" shaped section.