Not topping 50 mph sounds like the points wire is grounding out on the cover. Are you opening the throttle wide open and it makes a deeper tone and almost sounds like it's underwater? Take the cover off and look for dark spots or little burrs on the bottom part of the cover where the spark plug groove is. You can die grind some material away for the lower inside of the cover, then coat it will liquid rubber or electrical tape. People also put 2 or 3 gaskets under the cover.
For the battery, I'd see if it will maintain charge running without the lights on. It's very common for the charging system on a 360 to have issues with the headlight on. I went ahead and changed out my reg and rec anyway when I got mine.
For the battery, I'd see if it will maintain charge running without the lights on. It's very common for the charging system on a 360 to have issues with the headlight on. I went ahead and changed out my reg and rec anyway when I got mine.