OK, search on this topic didn't help. I've just recieved some O Frame Oakley goggles and a pack of tear offs. The posts on the lens are too far apart for the holes in the tear offs. There are two "V" shaped plastic tabs, which I suppose fit into the "strap slot" at the lateral edges of the goggle frame. I can't seem to fit them in without tearing the strap all to pieces. No info came with the tear offs or lenses on how to rig these things up. What am I missing?