Thumbwheel for Wanhao Duplicator I3 - Refit

This is a remix of Splashdown's thumbwheels:
http://www.thingiverse.com/thing:1452418

When I printed Splashdown's, it came out all crazy. I should have checked my slicer(S3D) before printing. The nubs around the outside were disconnected from the rest of the model. Also, the nuts fit very loosely. I measured the nuts I had and they measured at 5.5mm flat to flat rather than the 5.97 as Splashdown modeled. I edited the model to fit the nuts I had and ran the model through netfabb to corr