Do you have a humidity dome or anything to keep that humidity up also What type of lighting do you use and what are the temps in your clone area.

I have had success with cloning with no special powders or spray's. My method is I take a 4+ node clone , cut the stem at an angle , than place the stem of the clone in a glass of water for 2 days (seems to help this wilt shock lol), then place it in a "wick cloner" a simple homedade cloner with a 5 gallon aqaurium as a humidity dome. I mist the leaves on the clones once a day. Clones take root in about 10 days or so.

Glad that some of your clones are surving.