I won a 17t 1/8 EAI cog from bens on ebay last week. Something went wrong with my paypal payment and so my order was delayed. After reading this thread, I spoke with someone at ben's and they told me that they pulled the entire batch of 17t EAI cogs because they were indeed questionable. So I ended up going with the Milwaukee 17t cog.

Anyone have any experience with the Milwaukee cogs?