TOB,
Your TSH alone would seem to indicate over-treatment and I'm sure from your post, that you're on thyroid hormone therapy. I also take from your info, that you're on a T-4 only replacement medication.
Looking at just your Free T-4 & T-3, you don't look terribly over-treated but could use a slight dose decrease in my opinion (such as 12mcg) but I'm hoping your Dr. doesn't overeact and cut the dose by half or a third because if he does so, your joint/fibro pain may return.
I can say from personal experience that I suffered joint/muscle aches from being uner-treated and mine near-completely resolved when my dose was increased to adequate level. I'm also the type patient whose TSH does not properly reflect my thyroid dose level. My TSH was 0.01, even lower than yours but my Free T-4 was at mid-range and Free T-3 at just slightly above mid-range.
Some Dr.s over-react to a low or undetectable TSH, when the Free T-4 & T-3 are the more important indicator in some patients. This is especially true in those whose TSh levels have proven to be unreliable (rare but happens).
Your labs do seem to indicate a slightly slow conversion of T-4 to T-3 but I'm not sure it's pronouced enought to change your medication brand. I feel in your case I would monitor symptoms after a slight dose increase and if they return, discuss a change to a T-4/T-3 combination medication. I also personally do better of natural T-4/T-3 (Armour) and had unsatisfactory results on Thyrolar the synthetic version but may not be true of all patients. Both are made by the same company. Another option, would be for your Dr. to lower your T-4 dose slightly and simply add a little T-3 to your dose (Cytomel).
These are just some ideas to think about and discuss with your Doc. I also feel your ferritin levels needs improved because some people claim to experience some symptoms of low iron even at the level you are at. A reading of near mid-range would be a better goal and at least up to about a 50.
Make sure to see my post about my free audio, you can click and listen to via the link I provide. I actually go into T-4 to T-3 conversion in it somewhat, among a number of other things.