It looks like they are growing fast and raising their neck to find a bright window. Are you feeding them fertilizer at this stage or they have been growing for a while without sufficient light.

No fertilizer. They were in packing crate with dark lids, and were runnng out of head room.

Some of mine ran out of headroom too.  I went back to Walmart and got a deeper box.  I was using vermiculite, have only one fig in a container of perlite.  No roots yet but the vermiculite figs are rooting nicely. 
Ox

The best containers (one time - could not replicate) I found were from ShopRite,
16" height 'clear', also with  clear tops in  which I drilled 4, 1/2"  holes for ventilation
- not enough to prevent mold, had to slide the top slightly. Apart from that, I have
 ~12" high translucent containers (came with inferior opaque covers - not designed
for plant propagation)  that I do 'double' up with  either by the same exact
upside-down  container, or a cheaper shallower perfect-lip-matchting  one (6")
as a  top for more headroom/air-space.
George (NJ).

Jon, Are you using perlite now instead of vermiculite?

George;
I found l7 inch deep 14" x  23" boxes at Walmart with the clear (nylon clear) lids.  By the time I put in a grid to keep the cuttings out of the water I get l6 inches of headroom.  I put each of these on a heating pad but have no idea whether or not that improves things. 

What DOES speed things up is placing the cuttings in a bag atop the hot water heater in its closet. 
Ox

I am using about 2/3 Perlite and 1/3 vermiculite, and it is working well. I couldn't get the coarse Vermiculite anymore, so needed to adjust the recipe. The Vermic still holds the water, but the Perlite provides the air, by not holding the water, that used to be provided by the gaps between the Vermic particles. Many different aproches and mixes are usable, if you keep the principles in mind: you need moisture, but not too wet, and you need air, but not too dry.

Sorry to bring up such a old thread but I'm fixing to be rooting some cuttings shortly. I can get coarse or medium vermiculite. From what I'm reading coarse vermiculite is all I need until I'm ready to go to 1 gallon containers?

That was 5 years ago. Most people use more refined, more successful methods for rooting now. There are many past threads on it.

Good luck.

http://figs4fun.com/basics_Rooting.html

Thanks for the response. Since I posted this I've read about 5 different ways to do it. From what I just read in my zone I think the easiest is half coarse sand and half peat moss in the shade. Seems pretty easy to me.