[wheels]

Interestingly, after looking at this more closely, what I said is true of rakija, which is what I'm most familiar with (part of my family is Serbian), but appears to not be significantly true for grain distillates. Your sources mostly don't address these topics though; the latter one is mainly about copper and lead levels.

[btreecat]

Do you have any sources on methanol concentration that support your claims? If not the sources I provided show a low risk.

[wheels]

Stone fruits (plumbs, apricots, the two most common fruits in rakija) have higher methanol levels:

https://pdfs.semanticscholar.org/2e9c/544909602112c2816a956b...

[btreecat]

Nothing about batch size affecting concentration of methanol in your link.

Nothing about more methanol in the heads either.

Your claims stand as unsupported.