King pin help!

[Matt_50]

So I'm hoping to put my disc brakes on tomorrow and figured I'd do the king pins today.

Both sides had just a tad of play. So I bought the regular king pin set. I got my spindles off and checked the axle bore with the new kingpins. When greased they slide in and out perfectly, not tight but not loose.

Got the spindles on the bench, tapped out the old bushing and cleaned out all the gunk. With a little wd40 it cleaned up great, no pitting looks good.

The new bushing slide right in, and the just fall out!! A little grease would hold them but is this ok?? I know the instructions do not say to press them in but with wd40 they fall right back out.