The jimmunol link works but I can't open this one, which I think is the main article?
http://www.jimmunol.org/content/early/2012/08/05/jimmun

Now this guy is certainly no Dr and has questionable motives and products but he notes that when you take folate, one must take b12 and vice versa. I haven't found any other reputable sources discussing that but it's something worth looking into. I've had a bottle of methyl folate(400 mgcaps) and methyl cobalamin(5mg tabs) sitting around for a few months unused. I looked at perfect health diet and his rec. dose amounts which are miniscule in comparison to Dave Asprey's. I decided to not use them until I found more concrete evidence.

http://www.bulletproofexec.com/optimize-your-supplements/

What's the dose amount on that article for folate? Which brand did you buy? I have this one and am hoping it's the correct version.
http://www.allstarhealth.com/f/jarrow-methyl_folate.htm
My b12 is this one
http://www.allstarhealth.com/f/source_naturals-methyl_cobalamin_5mg.htm

I'm going to take my PS dose up to 1 full tbs today. I'll add 1Tbs each week until I hit my sweet spot.

You know you are reading info from the right person when he's willing to admit his dismissiveness and change his opinions.
http://www.marksdailyapple.com/the-definitive-guide-to-resistant-starch/#more-48021

I hope we're on the right track.
Please keep the info coming and I'll try to send through any good stuff that I find as well.