Hello Everyone, I need to find replacement glass for my father's old enlarger. The negative carrier of his Durst 609 has some cracked glass. This is a very old enlarger but everything else seems fine. The negative carrier seems to have plain glass on both sides. Would I benefit from using anti-newton glass or would that be a mistake? I ask because I figured that it would be a good thing, like an upgrade..but would hate to have the glass cut for the carrier only to find that it produced ill effects. Any advice would be great. The carrier is a Durst ADANEV 72 if anyone is interested. Thanks so much.