Hi all, I remember the first time i encountered the "Buzz". drove me crazy and i did not have far to go. it is one of two things, there actually could be a piece of fat on the underside of the skin, get rid of it if it is there , if it still does it you will have to take the head off and redo the rim. What happens is part of the inside of the bearing edge is sticking up to high so when the skin leaves the top of the rim it vibrates off of the high spot. I would not worry about sanding it to much, all you need to is make the rim look like your thumb. the palm side being the outside and the nail side the inside. i actually round off the inside a touch also. if the head is really wavy you can sand it on some concrete outside that has a broom finish on it, a smooth surface concrete will not work. you might want to lay some sort of straight edge on the concrete because even though it looks flat it might have a dip in it which you will sand into the head. a little wavy wont make the buzz sound, it is the shape of the rim itself
shorty
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