KL , I'm pointing to the slots I'm referring to with a screw driver in the photo. I should have taken a picture when I was taking it apart. I believe after closer examination that the trunnion bushing caps are worn fairly severely. Since I hadn't had a vibration before I took it apart I figured that the trunnion was ok. So I ordered a new trunnion today. Hopefully that will eliminate the vibration. I'm also waiting on new speedometer drive and driven gears that GDads helped me track down. He found them both NOS on ebay.
Jeff 1964 Chevrolet K10 Fleetside "A Kid's First Truck" Follow in the DITY 1951 Chevrolet 3100 Follow his build in the Project Journals 1969 Chevrolet Camaro Convertible | 2020 Chevrolet Silverado | 3500 Duramax | 2021 GMC Sierra Denali USAF Veteran 1983-1987 | PSP retired 1990- 2012