Hi Folks.. I recently acquired a near perfect Oakley Why 8.0. The sunnies don't fit me correctly but I always wanted to swap out the lenses (these have a few scratches) anyways. I need help with a few aspects here. Since I am quite new to the forum and the donor lens reference sheet is non-existent on the forum, any pointers? Being a rimless frame, how critical would the base curvature, etc for selection be? I want to be able to go to the optometrist with the existing frame and donor lens, try on a pair that fits me best and use it as a model to make what I give them. Would this be the right approach. Thanks.