Man....that makes my stomach hurt all over again.
I first tightened my column about 5 years ago, and like you, I only tightened 2 bolts.
Last year, I had to tighten it again, and this time, I went all the way in and tightened all 4 bolts, complete with locktite. The most aggravating part was the wiring harness and having to deal with it.
I don't want to do that job again.
I still don't have my horn re-connected.
steve