Need help with '53 F-100 kingpin bushing install

I am getting ready to install NOS FoMoCo kingpin bushings in my '53
Ford F-100 spindles. I noticed the bushings have grease channels that
aren't symmetrical. There is a triangular arrow looking cutout for the
grease zerk opening. Should this point up or down? It seems like it
would make a difference as the bushing has more channels on one side.
I didn't think to make a note of the bushing orientation when I took
the old ones out.

Any help would be greatly appreciated.

Thanks!

Kevin