carb ported and manifold vacuum question

Well, I thought it was a MP distributor because that's what my receipt says. I took it apart and the mechanical advance is not adjustable like all of the MP pictures I've seen. I don't have a welder or anything and really don't want to take the rest of the distributor apart to mess with the advance plate, so I think I'm stuck for a while. I have an email into the shop that put the car together to see what they will do about it. Ugh!!!!!!