Hey Jim, when you mentioned removing the flange, is that the metal piece that attaches the pumpkin to the drive shaft. I looked under there this weekend and that is where it is leaking from. Is it a pretty simple task? Do I need gasket sealant or anything or the sort. Or is it that simple, take the flange off, pull out the old one and pop the new one back in and reattach the flange, and refill. Thanks Chuck