ok in pic dscn0896 you can see the dizzy there are 2 vacuum lines hooked to it. Try disconnecting the one closest to the dist cap. plug the line and take it for a drive again. You may need to adjust the timing to the stock setting 6 degrees I believe. those dual diaphram advances can be a PITA.
Might want to pull the cap off the dizzy and make sure the mechanical advance is working just twist the rotor it should move and retract back.
Might just have a bad vacuum diaphram to I would consider swapping to a single type