My GH4 also had these two pins sticking up in the way of the port. I very carefully persuaded them inward with a paperclip. Problem solved.
Annoying though...
Hey fellas, I'm selling my SmallHD DP6. This one has SDI. Check it out. ;)
http://www.ebay.com/itm/SmallHD-DP6-HDMI-SDI-Field-Monitor-LP-E6-Battery-Mount-PRISTINE-/111259437660?pt=LH_DefaultDomain_0&hash=item19e7944a5c