I got my speedometer working! The set screw came out in the elec/mech converter box that grabs the inner cable. I'm really enjoying the simplicity of this model ('63). I watched a youtube on removing the cluster on a 64 and it seems a lot more complicated since all the switches mount thru the cluster.
I also got my retro radio system installed with exception to the antenna. I couldn't find the cable hole into the cable and the antenna wouldn't fit anyway. Guess what I have to order today?
My 'ol frame is a little sore from a couple days of truck yoga