When the metal heating paths starts moving around underside the grips, anything could happen. If there is a short circuit, it coud become very hot, depending on the layout of the paths.
Anders, I think that might be the explanation. I didn't glue or wire my grip, and it could have moved around and worn/created a short circuit.
Thanks,
Jeff
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'18 GG XC 300
'05 GG DE 300
'01 GG txt 321
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