Had a customer request polarized sunglasses for golf with the bifocal at the top of the lens, rather than the bottom, because he didn't want the b/f to interfere with his view of the ball at address. We tried a really low straight top bifocal, and he still didn't like having it there. He wants the bifocal at the top. Can't figure out how to order/block the lenses so that they come out right. Any suggestions or protocol? Thanks for advice.