I dunno about the left side. But from Pouncey at Center, I believe DeCastro does get slotted at RG. And I think they stick with what works in Gilbert at RT.

I think they keep Gilbert at RT, even though he might be the best player for LT in the short term because it is expected Adams is the eventual LT. And: best not to move guys around more than you need to. Get that right side to gel for the long term.