I will soon be experiencing the same thing, where the strap forms the loop and attaches and just above it is worn mighty thin. Hoping they will make it through the season, but not looking good. Now the fix, the plans are to get some similar strapping and have my local cobbler do the repair. To keep this from happening again I will cut a bicycle tire into pieces several inches long and have those sewn to cover where the loop attaches the strap and going up several inches to cover the wear area. Definately a design improvement Korkers should consider.
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