Are you talking about the large pointed pin that sticks up from the bracket that bolts to the core support. If so that pin is supposed to have a jamb nut that you tighten after you adjust it. Shoot me an email and I will send you a photo of what it is supposed to look like. I also have dozens of these nuts so I could send you one if you get the shiping.Sweet truck. I got to get some photos of my Blk 65 K10 on here.

Last edited by 66Suburban; 03/24/2012 4:22 AM.

65 K10 Longbox Fleetside Big Back Window Custom Cab
65 K10 Flatbed
Old School Parts 60-66
(208)946-6173
[email protected]