How much is the new pad ? Delrin isn't cheap (about $100 sq/ft at 1" thickness), and the pad seems to be 75 percent of the device.

If it needs to be replaced every 10,000 miles or so, is it better than a new centerlink ?

What does 'almost no wear' mean ?
Is it worn or not ? Is it grooved ? Is there a valley in it ?
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