Summary

What I have done here is take jyoshi1909's antenna for the D3 15th shell and attached it to the bottom of the D3 shell mod antenna from him as well. I did this for a few reasons it looks more accurate to the device and it wont break off as easy.

There are 2 stl files here one has a hole the other doesn't. The hole is 2mm around I put some 2mm round metal in the hole with glue to help keep it from breaking off.