what is the gap between tuff wheel adapter and rest of column

I just got the adapter from Classic and it doesn't seem like it is going on all the way. the nut just goes past the top thread on the shaft. I cant seem to get a good picture of it to show. It is aligned with the keyway on the shaft and adapter, any input or suggestions would be greatly appreciated. this is a 71 duster column if that makes a difference.


steering column tuff wheel 2.jpg