Hi Bruce, If you do decide to replace your membranes get them from MES. I'm on my 3rd season with mine and they still flow like new. I haven't checked the price lately but when I bought mine they were just over $200 each.
Someone asked about Theron and Royal Maple the other day and I forgot to reply on that. Theron's too busy to be on the trader and in fact is nervous about the season. He's got his trees tapped but doesn't have any help to fix leaks and truck sap.
Royal Maple has been out of the maple business for a few years now. His main business now is honey. If you shop at Hannaford's look for Royal Bees honey. That's one of Matt's accts. Matt is heading to GA next week with bees.
There's probably something else that someone asked about that I have the answer for. I'll have to read through the thread again and get back to you.