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I have a muscle disease. I wouldn't expect you to know that. .

No, but give a reason for "My medical condition" (no details required) is simple etiquette so people don't think you are some wacko.

Nothing obvious come to mind but then I have zero idea how many grams you need to take off.

Maybe the Samsung is lighter?

Too esoteric, perhaps there is a special website for that.
 
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