My Soma cog (from Nashbar) had been slipping on my brand spanking new blue Phil hub on the commute into work. I thought at first it was in my head as the lockring was very tight. Turns out, the lockring was bottoming out on the hub and not even touching the ~too narrow~ Soma cog.
I felt the slipping on the ride into work. Then I read about bad Soma cog compatibility and stripped hubs this morning on the forum (and Brent's post on the issue). I almost ***** myself thinking about my purdy new hub all f'ed up. I nervously rode home at lunch without backpedaling, hoping, praying, that I hadn't stripped the hub.
Turns our the threads were OK. I caught it in time. Lessons learned = Soma cogs are too narrow for Phil (and potentially other hubs). Time for a EAI cog.