Help. I'm trying to put lenses in a new frame. The frame is a Lulu Guinness that has a 3/4 metal eyewire and 1/4 open at the temporal edges. The lens is a rimless groove and there is nylon suspension wire at the "open" temporal edges.

This frame is like an oval "C" shape: lots of metal eyewire and little open area. I can't get the "shim" underneath the very tight nylon wire and I can't separate the eyewire from the lens edge to get a gap, either.

Any tricks other than cutting the wire?

Thanks. I'm typing this with my toes.