This is a bummer. I just put a new set of Marathon Plus's on my brand new touring wheels with Velocity Dyad rims. They are supposed to be my bulletproof wheelset/tires for this year(and hopefully a few years). I noticed that the tires went on almost waaaay too easily, I didn't even have to use a tire lever, they just popped on with a little thumb pressure. Now, after following this thread, I'm worried that I might have a problem with this set-up.