ez cloner problems

I am on my 3rd batch with dismal results
1st batch was purple salvia- 5 days all rotted
2nd batch after cleaning and getting chiller.Again purple salvia - 3 days wilted and rotted
3rd batch cleaned and soaked jets/mister. Salvia,butterfly bushes and catmint-after 5 days catmint and bf bushes are looking kinda rotted,salvia starting to show fine hairs on stem but some tips starting to soften.
I followed manufacturers recomendations for nutrients "dyna gros pro-tekt and kln at 1 tsp per gallon",chiller at 70,and PH between 6 and 7.
http://www.ezclone.com/media/docs/cloning-manual.pdf

I have cloned bf bushes in sand and had 90% success rate after 2 to 3 weeks.Salvia was about 5% success.

Anybody want to chime in with ideas.
Most info on cloner is coming from cannibis web sites.

Lower the water level in the cloner. I had to do this to root Echinacea cuttings. I lowered the water so the sprayers still spray but not as strong as when the water is up to the recommended level. Leave your light on 24/7. The neoprene collars shouldn't be pushed down into the hole. Simply put the cuttings in the slit and stick it on top of the hole but not down in the hole. When you have it down in too far, the collar literally chokes the cutting to death. That appears to be what happened to your cuttings. I had this same problem when I first got the EZ-Cloner. It takes some getting used to, but you will be amazed once you get used to this method of propagation. I would add some fungicide to the water similar to what the Orchid folks mix with their water to keep the roots from rotting. You can also try hydrogen peroxide. Try about 1/2 - 1 cup of 3% hydrogen peroxide in the water. Try putting one cutting in the cloner with peroxide in the water. See how that cutting does for a few days before adding more cuttings. After you get a few cuttings to work, then go back and fill that baby up and root all you want. Keep a notebook of what you do and what works best. You may have to do different things for different plants. Plants that rot easily need to have less cutting below the collar.

Thanks,
Clint