In my opinion I would not be concerned about small differences in lab test results with those med changes. Lab results would show variability over the day, plus test results vary even when done on the same samples. Also, everyone is different in what thyroid levels they need to feel normal. Most of us have found we needed Free T4 around the middle of its range, and Free T3 in the upper half of its range, and adjusted from there as needed to relieve symptoms. Symptom relief should be all important, not lab test results.
So I suggest that you should go back to the prior dose of T4, by Tirosint, by staying on the 112, and stop the NdT, and use Cytomel for your T3 so that it is easier to adjust. Based on your labs you probably need 10 mcg of T3 as a start. In addition hypo patients are frequently deficient in Vitamin D, B12 and ferritin. D should be at least 50 ng/l, B12 in the upper part of its range, and ferritin should be at least 100. So you need to supplement as needed to optimize.
I am also sending you a PM. To access click on your name and then from your personal page click on messages.
Don't you often recommend "vitronC" which is an iron supplment along with vitamin C that can help with absorption of the iron?
I also agree with Gimel. I would only use 2 meds. And it makes sense to go both synthetic. My wife and daughter do better with dual synthetic than they did with Armour and synthetic T4. The now both take synthetic T4 (levvo) and Cytomel (liothyroinine). But tirosint is OK for T4 as well, although I don't think it has as many options for dosages then generic T4. do you have allergic reactions to the generic T4 and that is why you are on Tirosint?