I did not set the miter slot to blade at 45° when I set my saw up, just never cut 45° stuff until now....

So it is off, at 90° the blade to miter is at .001, love it but at 45° it is .014, way off.

The back of the blade is to the right by the .014, now to correct this I need to shim the back trunnion down.

I just don't understand this, is this not like just lowering the blade, how will this fix the problem?

I am getting this information for this site which is a very good write up on setting the saw.

http://www.americanwoodworker.com/bl...-tablesaw.aspx