I bought a Shimano dynamo hub, 3N72 32 hole, and I'm having trouble finding any selection of 26" rim brake rims too build it with. The only rim generally available is the Mavic XM317, which isn't a bad rim I suppose. But with all the choices of disc rims I thought I would have some kind of selection. Any ideas on where to find rims? This is going onto my 1990 Trek 7000 bike that I use as a commuter.