Gary Korneman

I just zapped another piece of electronic equipment connecting it hot, they wont tolerate arcing during hookup. knew better. Also the type capacitor you are looking at is an electrolytic.  Has the insulating material between plates  grown or etched on chemically. they wont tolerate reversed polarity, if that helps.

you might check How to wire a gy6 on youtube  skip to about 8 min and you wont miss anything

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The rough running two timing modes got my attention.  I had the strangest rough running on my 06 700. Did it when I activated the 4 wheel lock.  Didn't notice indicator flashing when it did this at first.  Turns out it is supposed send erratic  signal to coils  as a rev limiter  while not fully engaged to protect itself.  Dirtiest running I have ever experienced.  As soon as it engaged fully the lamp stops flashing and runs fine.  I don't see how these engines could jump valve timing unless the chain and sprockets are worn beyond recognition.  Good luck.