i have herd this about campag rims however my khamsin rims seem fine with my vittoria zaffiro tires. (great punture resistant tires IMO)

campag in their literature, assure us that they build their rims to exact industry standards, but there seem to be some tires that work better than others.

i can`t remeber where i read about this, maybe on roadbikereview.com try giving it a look for some suggested tires.