well pulled the carburetor off and I don't see any cracks in the base plate and I held my ruler across it on its edge and I couldn't slip the feeler gauge under the ruler anywhere. I pulled my current 1 inch 4 hole spacer off that I was running which was having trouble sealing in the passenger front corner. I had a 1/2 4 hole spacer that was brand new and I decided to sand it on flat glass first and even being bran new it wasn't true and flat.
So the 1 inch 4 hole spacer I am starting on now, I'm going to sand it the same way I did the other one and it should solve my problem of not being able to seal a gasket in the front left corner.