The thing that concerns me running a 40 micron filter is that it's quite large.
Paper filters filter to way less than that. So while a 40 micron filter seems to be ok, I would rather run a decent paper filter (if they exist) or even two Ryco filters in parallel. The e85 breaking down the glue is a viable theory, so 2 filters from an e85 compatible car will be what I do when I pull my finger out and get onto e85 (and when nistune releases the flex fuel update for my ecu)