James, no plans for trying to recover the methanol. Not enough volume to warrant the expense IMHO.
It may be an advantage to have some in the biodiesel, it keeps glycerin in suspension and takes care of any water that may be present in the fuel. Yes, an alcohol in diesel fuel changes the flash point and cetane value, but so far my truck runs beautifully on 100% unwashed biodiesel or mixtures of bio and veggie oil.
The boiling point of methanol is only 148 deg F and my biggest concern is for it to boil off in a hot fuel tank and become a fire hazard. Don't know how hot the fuel will get, but it may get close.
I have lots of glycerin, probably about 30 gallons. Used some for soap bars and simply burn some. I'm using Sodium Hydroxide (lye), so it hardens after a few weeks, which makes it easy to handle.
Know about greasecar forum, I post there from time to time, but those guys have mostly 100% veggie oil systems.
I'm interested in problems that may lead to injector coking. Posted a question to that effect (greasecar.com), but don't have any real answers yet.
Coking may become a concern for you in New Hampshire if you don't purge the system completely, but it's probably a long term process, so most "greasers" havn't had the problem yet.
Still learning....