Hubsan X4 Race Frame Quadcopter

Hubsan replacement chassis in "race" style. Based off froetz work here: http://www.thingiverse.com/thing:661243. I had printed that one but it always seemed a little off to me. Brought his stl file into solidworks and did some measuring and literally nothing is centered. Every measurement was off. (last pic shows wonky measurements of his design) So instead of trying to redraw it correctly, i decided to make my own frame. My design is "roughly" the same measurements but the circuit holde