Overheating 360 new engine

Without reading 9 pages again, I thought of something that may have an affect on engine temps. This applies to intakes that has the t'stat housing as part of the intake
What I found was this, with high flow t'stats such as Milodon, Robert Shaw, Mr. Gasket.
When these stats are fully open, the outer barrel drops down about 1/4-5/16". The water flows through this space. On some intakes, there is very little room for coolant flow because the barrel is close to the casting. If you calculate the areas, this area is actually less than the T-stat opening & causes a flow restriction. What I have done is ground away the metal under the lip that the stat sits on to remove any restriction.