Originally Posted by Cirquerider
The Fritschi heel is screwed in with 3 screws with one in the center. The location is well behind the normal mounting position for most other bindings because it is actually not the heel being mounted, but the hold down for the hinged binding. I'm not familiar enough with the B3 construction to say, but this is the first time I've heard the concern.
I'm also not familiar with the B3 constr., but It's a really popular backcountry ski to have mounted with Fritschi's, and I haven't heard anything....
If there really is a problem, one thing to keep in mind when considering if it'll work for you is the concept that the smaller your boot, the further back that screw in question will go. There's also a small ( up to 305mm), medium (280-340 mm), and large(330mm? and up) size binding... so someone with a 300mm boot and a small binding may work, but someone with a 305mm boot and medium binding may not....