Have made about 300 clones on a eZclone 30
I make sure the red spritzers are clear each time water is replaced. Water replaced every 5-7 days.
Keep air lines down in water by putting air line through a chrome socket - then tie into a loop so it will sink air line to bottom every time without hassle...
If done during hotter temps - Water temps can be broght down by floating bottle of frozen water in the tank one or two times a day. There have been times when the machine was in a room that was close to 90 degrees all the time so the tank water had to be brought down.
Make your cuts into the older stems that are harder if possible - they hold up better.
Make your cuts with less angle than a 45 degree. My cuts are usually around 30 degree angle.
As far as getting root mass - Not sure why that's happening - I always get about 4 to 7 single strands that I cut off the ends which makes it create a ball of roots at the right level.
Each strain has a different root time - Some in as few as 8 days... White Widow is a long slow rooter at about a month...
You might also try using a root enhancer though I've never had to...