How to ignition lock cylinder in Rodeo (1998)

A would be thief mangled my ignition lock.
Now I have a new lock cylinder and I am trying to get it in, with no success.
I have three pieces..
- The lock cylinder itself (new, with the little lever on the side which
moves when you insert the key).
- The metal coupler which goes between the back of the lock and the ignition switch.. which has the cam on it that releases the steering wheel lock.
- The ignition switch, which is unscrewed right now, so not really in the picture just yet...
I already figured out you need to have the key in the ACC position to insert the lock cylinder... In my first attempt, I got the metal coupler into the ACC position, and inserted the lock cylinder (also in the ACC position).. and it went in.
But once in, I couldn't turn the key at all. I could see that the coupler (from the ignition switch side) was wiggling a little when I tried to turn the key, so I know they matched up...
Now I have a worse problem.. I pulled out the coupler piece and although I see basically how it is supposed to fit in, I can't get it back in place correctly. I position it so that the flat side is aligned with the steerling wheel release.. it seems like it should just go in but it doesn't. One time I got it in, but it won't turn.
When I started out, this coupler piece was in place and I was able to turn it and unlock the wheel.. so obviously I messed things up.
What I am wondering is whether there is some need to get the end of that lever that comes off the lock cylinder somehow engaged with something to make this all work.
Anyway, sorry for the vagueness. If anyone knows how to do this and could help me out it would be greatly appreciated!
Thanks -Ben

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