They seem like real nice people. But the support is bad. Start with no parts or service manual. The guy Paul Davis does not know very much about making bio-diesel unless it's very low ffa. He does not know how to make bio-diesel out of high ffa oil. I know more about his machine than he does. I had do all the research and yes it will make bio-diesel out of high ffa oil. I would like Sweet Home BioFuel & or Paul Davis honor their warranty. I think bio-diesel is great it's a shame people are around that have NO HONOR! read full review »