Chair feels great.  Currently waiting on an RMA request response though.  One of the four nuts embedded in the chair bottom to hold the chair back to the chair base broke and is free spinning.  I can only secure 3 of the four bolts and I can't off the broken bolt because it is spinning and there is no access behind the plate.  Short of cutting the chair open, I cannot disassemble.  Curious how this is going to get shipped back since I can't take it apart...