Did I collapse my steering shaft?

When you had it in position, did the inside column brackets line up with the bolts that it hangs from under the dash? The metal triangular firewall cover (floor plate), did you remove it when you were working on it? If so, you may have reattached it to far down the shaft. Loosen it from the round collar that it attaches to so that both pieces can slide along the shaft and try to reinstall.
C

Nope, all went in as it was supposed to. That was my first thought actually so I tried to slide the breakaway biscuits back and forth to see if it would help but they did not move enough to make a significant difference.

There's actually a 'stop' at the bottom of the column which rests up against the floor plate. That was correct when I installed it. I took pics before I did the conversion and it looked the same when I put it back in.

I'm confident it's an issue with the shaft and from what it sounds like probably the new collar.