Sameer Puri 
This happens every so often where when you go to mill, the inside of the restoration is "flat". If this happens, dont panic- this is a quick and easy fix that can be done in a minute or so.
This happens every so often where when you go to mill, the inside of the restoration is "flat". If this happens, dont panic- this is a quick and easy fix that can be done in a minute or so.