here's my 5 min stab. i have to run tonight but if not answered i'll try again in the morning...
there is something keeping this from flattening...
might need to use the top face and make a new virgin part...
see video...: http://screencast.com/t/yYXUVYwrwYp
Much in same vein as Matt.....however, I noticed for the offset [if you increase the units precision] the distance is actually 0.0295".
I only managed this in Ordered, as I was unable to complete it in Synchronous [in the 2 minutes I gave myself] to a flattened model, for some strange reason.
Design Manager Streetscape Limited
Solid Edge ST10 [MP1] Classic [x2 seats]