very old motorguide 12 24 making a strange noise and when I open it up 2 magnets came out,,,, 2 stayed in..... is this thing a 2 pole or a 4 pole motor..I'm going to epoxy them back in but not sure after a closer look..... I thought magnets were N -S-N-S....... but the 2 magnets that are still attached are n and s...........but also only 2 gaps are in the motor between the magnets not 4 gaps.....hope this makes since