Hi, I just purchased a mint looking N lens from Japan on the bay. To much of my surprise though, the rear element has haze, in such extent that it is unusable. I am assuming that this is due to balsam opacity, or perhaps separation in the rear element. Having it fixed would probably cost more than the $300 I spent so far, if such was available. I will certainly obtain from the seller that he takes it back, for he mentioned no problem with glass. The lens looks so good however—it is like new—, that it's heart breaking to dump it. Has anyone had success in removing haze from a 1.9 N? Are rear lens cells still available?