Found the major problem with the core support. Seems as though the bottom is installed at the wrong angle. The top easily moved, but the bottom is at the wrong angle which pushes the shroud up so the combination of both those problems and the other problem with the aftermarket motor mounts = fan hits bottom of shroud. Dont know the exact cure, besides drilling spotwelds out of bottom and twisting to correct angle so the shroud lays properly. I took a pipe wrench to the bottom and gave it a tweak and straightened up the top with a hand sheet metal bender, shroud fits a lot closer and will hopefully at least help maybe not cure the problem
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