I'm repeating here the name and address of Jesper Petersen info@plexifix.dk who can supply exact replacement hatches for the LM32. I do not know if he stocks hatches for the other models. His price is most reasonable, and the shipping to USA from Denmark took less than 10 days, arriving in perfect condition in a very solid crate. Thank you Jesper! I had no idea how I would replace the originals, all are cracked after 34 years, and likely would fail in a spectacular fashion at the worst possible time.