He all!
The spindle bushing reamer size specified is .860. I found one that is .863. is that going to be too much slop, or will it be fine? Sure doesn't seem like much.🤔

 

I posted a pic in your other thread, too, but just in case, I found specs in my shop manual that calls for 0.861 as maximum inside diameter of spindle bushing. Looks like a .002 differential between that & minimum OD of kingpin - 0.859. I'll defer to others on how much is too much ....

 

Here is a very nice, correct size reamer... I purchase this same one, same place about 6 months ago, for doing my Kingpins.

https://www.speedwaymotors.com/Sprin...ilot,3973.html