Not calling you a dummy, but did you happen to check the deflection code? If you have it strung correctly then there's a possibility you got mismarked limbs or the string/cables aren't to proper length. The only thing I can think of to cause the mushy feeling is maybe the rigging isn't set up properly or the draw stop is set too long. I wonder about this because if all you changed was the limbs then you probably didn't mess with the draw stop from it's previous setting.
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