I am currently planning to upsize to a 20 gallon brew kettle. Wanting to buy American made, I have a question about the Blichmann G2 brewing kettle. My 3 current kettles, 2 ten gallon and 1 five gallon kettles all have tri-ply bottoms. The G2 does not. Has anyone had issues with the G2 kettle single ply bottom? Or suggestions for another USA made 20 gallon kettle?