sry my explanations are kinda weird sumtimes lol, this should clear things up i hope


EDIT: also note that the ''bottom edge'' is on a 90 degree angle to the heel block (that thing on the bottom of the trem unit) if you would make the upper edge paralell to the body then the heel block wouldnt be on a 90 de3gree angle inside the body, making the reach of the tremolo somewhat smaller than optimal.

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