Old thread, but for the record, there is no wire between drop three and four. This will funk up your spinner. And probably made some of the targets register twice. Switch matrix.

Chances are you don’t have this game or these problems anymore but for future generations, I reversed the flipper coil power wires which immediately blew the fuse. Checked my references, corrected the mistake but kept blowing fuses. The diode on the coil was fried (I think that’s the technical term). Replaced that. Flippers fine.