I concur - It looks like you are missing the "dust cover/washer" combo.
Also - since this is the "old" style front end setup, the clamps do have the capability of sliding back and forth across the outside of the BB shell. Actually that has to be done to properly tighten each of the BB shells into the frame. The correctly placement of the clamps should allow equal amounts of the BB shell to be visible to the outside of the clamp. Based on the pics you shared, it is clearly oriented towards the drive side.
You said you tried loosen the bolts on the clamp and it will not budge - Try and remove the bolts from the clamps completely and very carefully pry open the clamps with some kind of wedge. This should allow you center the clamps over the BB assembly. Then clean up the bolts, grease them up a little and re-install.
This might help a little, but you still need to get that "dust cover/washer" over the end of the non-drive bearing. If I am not mistaken, this is what actually holds the shaft in the correctly horizontal alignment. Without the shaft is free to "flop" around some.
I had the same problem once off after a rebuild when that "dust cover/washer" fell off without me knowing it. Finally found it had rolled under a tool chest. Little bugger!
Good Luck!
