Hi all, I just picked up a set of monitor 10B's from a seller on CL for $20. The cabs are in pretty ruff shape, and three of the mid drivers are frozen(shifted magnets). I am planning on restoring these speakers and I would like to know what would be a good replacement for the mid drivers? They are MW 6503. I saw three MW6600X on that auction site, would they be a good replacement? Thanks in advance.