70 C10 Auto Non-Tilt Column Shift Spring Missing

[Gromit]

Searched the archives and factory manuals and parts catalogs and I didn't find anything about this or anyone with this issue on a non-tilt A/T column, so here goes:

This 1970 Chevy C10 with TH350 and non-tilt column shift has a severe case of sloppy shift lever syndrome - and it is mostly coming from the shifter bowl area rather than being down in the trans case linkage or on the end of the column that is on the engine side of the firewall. The manual shifter on the trans with the linkage disconnected feels right with no unusual slop there. And even the linkage bushings are reasonable.

Attached are photos - I know I am missing the small nylon bushing that snaps on adjacent to the ball end of the shift lever; but most importantly I also believe I am missing some kind of spring or wave washer that must go between the bottom of the shifter lever bowl and the shifter lever.

I am attaching member JimK's photo of a shifter bowl from a 1972 tilt column; but since mine is non-tilt you can see it is different between tilt and non-tilt because there is no hole in a non-tilt. As he mentions the Tilt lever takes a 5/16 OD x 1" long spring with a wire size of 0.063"

So my question is does anyone know the specification for the compression spring or wave washer I would look for with this non-tilt column?

Some of the shifter lever slop (maybe 15%) is coming from the previous owner installing a regular roll pin instead of the factory lever pin in the column shift lever to shift bowl - any play at the pin gets greatly magnified at the end of the lever. A 7/32" drill bit will fit through the existing holes but is a little loose; but a 15/64" drill bit is too big and won't go - so just a 1/64 difference - the factory pin must be sized somewhere between & I plan to get one..

Also a smaller issue is I am not sure whether or not the nylon bushing and rubber straight cut O-ring combination shown in the photos is installed correctly so any help there would be appreciated.