Mine is a custom frame. I built it thinking I would use the wheelset off of my mountain bike. When I started riding my newly built-up bike I also started popping spokes. The old wheels had titanium spokes, about 32 of them I think. I was limping in from somwhere with a broken spoke when I decided to make my perfect touring wheelset. Phil Wood 145 tandem rear hub 40 hole, Hugi tandem front hub 36 hole. Rhyno Lite 26" rims. DT Alpin III spokes, Marathon tires. One fun, yet totally unimportant thing that happened was that all of the spoke lengths are the same! It would have been much easier to make the frame to fit the 145 hub than to cold set it. I never would have thought that moving each side 5mm would have been that big of a deal. I have worked with frames for a long time, but that was a surprise. And yes in deed at one point I was greeted to a loud & sickening pop when a fender bridge between the chainstays broke loose on one side. I had to rebraise and touch up the paint. The only thing that I don't like about my wheelset is the thought that it is very heavy. I don't know how heavy it is, but every part on them is heavier that typical. On the plus side I have about 1800 miles on them and all I've done is add air!

Tom