Good to know that it has been tried and there was no big improvement. I have a feeling that after leaf is fermented once and then sits for several months it is probably beyond the point of responding to a second fermentation. I have no facts, just a feeling. Sort of like when a cigar dries out and then you put it in your humidor for a year but it still never regains its previous glory.
I am still curious about what lightnin93 finds. Please let me know. I also did home fermentation when I grew my own. I had great difficulty keeping the humidity high in the homemade kiln. I ended up putting damp leaf into plastic bags and then into the kiln for correct heat. I opened the bags daily to rotate the leaves and allow the ammonia to escape. It seemed to work well.