Steering column slop 1971

[72 Burb 3dr]

1971 C10 TH350 column shift, non-tilt.

I just installed an NRG removable steering wheel kit on my column. The shifter is a little sloppy, to the point of the vehicle not turning over/starting if it's not in the right position. But what I just discovered that's even worse, is if I pull up on the steering wheel the entire inner portion of the column comes up/out about an inch or two. Enough that the top bearing can come out of the shaft and flop around.

I've used the search function, but haven't found a good thread that deals with what is causing my issue. Can someone direct me to a good thread that covers this, or let me know where my issue originates? Easy fix/rebuild? (I've checked the service manual also).