I tested the runout on my router and found it to be .011" out. I purchased some PreciseBits collets to see if that would remove it. It didnt. I spent most of this afternoon trying to shim the router to remove the runout. The best I could get is .005.
When cutting a 3X4 square the difference between the top and bottom of the cut is out about .008. I am at a loss as to what to do and am turning to you experts for help.