Well I did mention that I think Fluoride is the main factor stopping recovery/progress and that it is the reason why many hypothyroids feel like they have to supplement thyroid for life.I feel like I followed most of that and didn't see results that fixed the disorder. Perhaps magnesium and niacinamide I never used, but about everything else I had good and quite hypo.
Let's say your Iodine uptake is 90+% blocked from a calcified thyroid gland, you can't get the sufficient dose of Iodine from the RDA and it can explain why high dose makes you feel good. Iodine is essential for thyroid production.