Years back, I bought a set of Campy Record/Mavic Open Pro wheels from Performance. I never had luck with commercially built wheels, but the wheelset was cheaper than buying the just the hubs. So, I thought: what can go wrong? Well, halfway through my first longer ride, I had to true the rear wheel on the side of the road. When I got back home, I re-tensioned it and it's been fine since. Until today. I started out on a 60+ mile ride and 1/4 mile from my home I heard a ping. A nipple popped on the rear wheel. I rode home and got another bike to do the ride. I went to replace the nipple and realized the broken one was alloy. I've owned these wheels for years and never noticed they had alloy nipples. They now have a little over 4,000 miles. This is my nice weather/longer distance bike. Replace all the nipples? What would you do?