Three On The Tree Question

[junk4cash]

This is my first vintage C10 so please bear with me. Someone over the years, lost the pin that goes in the shift lever on the column and just stuck a screw in there. I will replace the pin but am wondering why I can just move the shifter up and down without pulling back on it and it just feels sloppy to me. I haven't driven the truck yet, as I'm still getting her road worthy but this is on my mind. Do I need to "rebuild" the column? Will replacing the pin put more pressure on everthing and get me back where I need to be. Thank you for any info.