Hi all;
I am a new Bikila LS owner, and am really concerned that, after running only 84 miles on the shoes, which happened after running my first ultra, a 54K on a combo of stone dust, asphalt, and dirt trails (about 3/4 stone dust, 1/8 asphalt, and 1/8 dirt), I was shocked to find that the sole of my left big toe was already worn through the gray tread, into the black, and even starting to wear that down.
Here is a photo of the wear with the right and left compared side by side.

Even though I have only been running in VFF's for about two weeks, I seem to be adjusting to them really fast. I had been running in various forms of "minimal" shoes before the VFF's, and have strong calf muscles, so running the 54K was not a problem.
I had thought that running on stone dust and dirt would be much easier on the shoes than asphalt, so I gave it a try.
But looking at some of my old pairs of shoes, I find that every pair shows significantly more wear on the left sole under the big toe. I noticed while running yesterday in a pair of Asics that I was dragging (or pushing) my left foot a bit after the fore or mid-foot strikes.
I did some experimentation, and find that I need to adjust my form, so that I am landing directly under my COG. I have read "Chi Running" and seen the vid. I have basically changed from a heel striker to a forefoot striker, but sometimes that left foot tends to drag, probably mostly when I'm getting tired, and sloppy, and my cadence drops down.
When I ran 6.5Km on asphalt today in the VFF's, I did not feel that I was dragging the foot, but probably while running on the trails on Saturday, especially going down the very steep hills, I was scraping that foot along the ground.
Any suggestions / comments?
Thanks
FW