Just for general interest, this is what 700x35mm Marathon Plus Tours look like....
It is a tight fit under those fenders, which means the fenders have to be aligned exactly strait, which of course fenders often aren't.
I only have about 2" of clearance to fit a fender between the front forks, I think I'm gonna buy wider fenders anyway and maybe cut 'em at the edges as needed to fit up there between the forks.
Mike