I have a 79 evinrude 140 that's been sitting a while. Cranks and idles fine. Will rev to 5k on land and will neutral rev in water fine but under a load at 3k rpm engine will cut out on one bank. Thinking the right side. Engine will eventually die if not returned to idle. It does starts back up and idles with no problem. Electrical issue I think but not exactly sure what. The stator and rectifier ohms good and stator puts out 300+v on both sides. Rectifier diodes good. Haven't tested much else yet. Any other thoughts or sugestions would be appreciated.