It looks like the Eustathios Bearing B part at https://github.com/jasonsmit4/Eustathios/blob/master/STL/Eustathios%20Bearing%20Holder%20B%20-%204%20-%20v1.0.stl is a bit broken. 

It looks like the Eustathios Bearing B part at https://github.com/jasonsmit4/Eustathios/blob/master/STL/Eustathios%20Bearing%20Holder%20B%20-%204%20-%20v1.0.stl is a bit broken. Does any have an updated STL file?

Check Eric’s updated Spider version or put it through Netfabb

https://netfabb.azurewebsites.net/

NetFabb worked, thanks!