Step files of the hip

I was finally able to find the hip files for the poppy robot on My 3d Printer is having trouble with the mounting holes making the part too fragile in those areas to be effective. I have modified most of the other parts removing the countersunk areas making those areas of the part much stronger. Does anyone know where I can locate the STEP files for the hip connectors so I can modify them as well. The githup repository and grab cad repository do not list those files. I am using auto desk inventor software to modify the parts.

Thank you all in advance.

You should find every thing you need here: