Hey MC,
Not to worry until you start seeing a change in reaction. That's when maybe it's time for a lite resurface. Actually, any good soft ball will track up if the lanes are a little worn, this is how you know it's doing its job (creating friction). Just curious, are you on wood or synthetic? I've also seen older synthetics burn up as well...
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Rick Leong
Ten Pins Pro Shop
Track Intl. - Amateur/Pro Shop Staff
Vise Inserts Staff