Johnmac
Some random thoughts:
After 16 months on Cutler, I would think all the mercury would be out? Have you done any follow up testing to see what your levels are?
In general, I suggest stopping chelation and getting back to some sort of baseline before starting methylation. Methylation will cause more toxins and metals to come out, which may make you feel worse.
Could your friend who did Rich's protocol supply you with some samples so you can try it out and see your reaction?
In general, there is a middle ground between Rich's simple protocol and Yasko. With the sulfur problems, you may want to do Yasko testing vs. 23andme, because 23andme doesn't cover SUOX (sulfur).
Yasko says to treat the SNPs in this order SHMT/ACAT, CBS, MTHFR, MTR/MTRR, BHMT, MAO A, SUOX, NOS, VDR.
What I'm doing is treating CBS by reducing sulfur and ammonia, then I think I may be able to do Rich's protocol after that.
The HDRI methylation panel is a good idea to do first get a functional reading of your methylation cycle. The SNPs are just tendencies, and may or may not be activated. If your methylation is indeed messed up, then you can do SNP testing to get a roadmap of improving things. The HDRI panel can also be run every so often after starting methylation to see if things are improving.
In general, with supplements always START LOW and GO SLOW. This means start with a tiny fraction of the recommended amount and then very gradually, as tolerated, work up to a full dose. If you experience adverse reactions, then STOP, let everything clear and and restart at a much smaller dose. This will keep you from having a major relapse.