https://photos.google.com/share/AF1QipM_xzsVtayQx-p9LmCyktJdPtMbBzCfHoffMSNwprZcNXtxQspHFk1j5WtBcXUJxg/photo/AF1QipMfVMUQoXXMkIVNRfFQMFMSIL5LsCPR_MWxMSOR?key=dzZBZzl5elFiaVU1ZzI1OFV6Z1RQc0VMb2VSZnR3

Here's the parts. Should I not have three more of the really long set screws? I'm talking about the piece in the center of the picture  that looks like a short section of threaded rod.  I just can't see how the hexagonal  studs attach to anything without those set screws. Also can't help but notice that the studs in my kit look nothing like the round studs on the meca systems webpage.

...I was sold the wrong kit? The bag is marked 690 enduro...

Tried reaching RMS (the vendor) but they are out for the week.

Thanks!