I drill the KP to the space between the bushes with a long 3/16" drill than cross drill with a 1/8" drill so the grease will flow. If You are using Hardened Chrome with Induction Hardened rod, drilling the cross hole needs a special procedure. I use non induction Hardened rod when I drill this grease galley. 6 Pak of Beer job. Put zerk on top and grease without crawling on your belly.