i did this to my brake pedal cause it was too soft and i kept locking
up going into corners.
easy fix, goto the hardware store and buy some foam weather stripping
about 1 inch wide and 0.75 inch thick, and is sticky on one side.
install to backside of the pedal arm, double thickness if required.
it works real good, now my brake pedal really feels like one.
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I am the great Galooga!
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