I've got a leak at the LPR. When the front parts are out of the body (first link for picture), the pressure should be sealed by the black seal at the pin. I have replaced the black seal for a brand new one (second link for picture) but it's still leaking. I've tried to take apart the back cover of the reg but it's stuck (third link for picture). So I would like to know if there's any other o-ring that could be damaged and make the reg leak.
there is a 112 o-ring on the rear cap of the LPR (the part in the 3rd pic) that is probably worn out and needs to be replaced.
to get it out you should be able to use a nickel to unscrew the cap (it is more than likely loc-tited in unfortunately) both PPS and I have special tools to do this without damaging the cap if the slot isn't too mangled. you can send it in to them to have it repaired and they may decide to replace the cap as well.