Doubt it. What's happened to the nipple washer? Zipps should have a thin oval washer between the nipple and the rim.
Not sure. It’s a potential purchase for repair. You saying they might not be Zipps?
Pretty sure the rim is a Zipp. I don't think any of the crabbon fibber rims have dimples. But I wouldn't be surprised if it's been rebuilt, and whoever's rebuilt it hasn't bothered with nipple washers. They are a total PITA both to remove and refit.
@croft started
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Doubt it. What's happened to the nipple washer? Zipps should have a thin oval washer between the nipple and the rim.