Hi,
Did you print it the way way it is orientated in the stl file? There is quite a bit of detail in your design, but I couldn't get it to sit flat on the bed or get my slicer to create the correct support (maybe I should work harder on this?). I split the stl and printed the two parts lying on the bed.
When I tried to fit them round two connectors there was a gap (see attached picture) that I could not close, no matter how hard I squeezed. Maybe my connectors are a different diameter?
I don't suppose there is any chance you could send the original cad so that I could modify it?
You have obviously spent a lot of time getting the detail right.
Best Regards
Andrew