Is it ok to add, like say fina (ester removed) or TNE, to the T-1 Final bottle or is it already completely saturated with the 1-test and 4-ad? or is that too many substances trying to try to get across the skin at once?

You can add TNE, but i wouldn't add fina. 1-test and fina aren't good to stack cuz they're both very suppressive.
thanks for the reply. any idea on how much TNE you could add before saturating the solution?
2-2.5 grams would prolly be the max that you should add.