I'm using the same rest, cock feather down, and it still comes in contact with it. I was told by a friend who works at one of the shops down in the Tri-Cities that bows shooting over 240 fps will cause the arrows to come into contact with the rest. Apparently the rest doesnt drop away fast enough.

It hasn't presented too big of a problem for me yet, I'm getting tight groups, but i always thought the idea behind the drop aways was that the arrow would have NO contact with the rest at all... Go figure...