To be fair, the original installation, the 4 66B blocks to the left on the frame, are pretty good. It looks like the 3rd row of blocks, the 66M's that don't line up were added by someone else. There are no spools in that row and the original installer may have left the space for expansion and someone else came along and slapped a 66M block and tie cable into the space. It's the only set of blocks that are top fed. It also looks like the 66M blocks undderneath the B blocks don't belong as they are just stabbed in.
The 3 rows of M blocks on the right were probably from the original installation as they are also consistent with the two rows on the left.
I'm guessing it took several years and hands to get to this condition.
Carl
