Originally I removed methanol from the glycerin and bio but it was such a PITA I quit. If I remember correctly, I will have to heat bio to 180 deg. I think I will let it escape to the atmosphere. Not that much to capture in the bio. I think the other method is to increase the amount of Magnesol used to final clean.
Wish Fabman would jump in with his facts. Sure been quiet. He must be building something again.