Yes. If the gas block is not seating correctly you aren't getting gas through to drive the action.
Take the gas block completely off and clean it and the barrel. If it still doesn't reseat correctly look inside, you might be able to see a wear point where it's hitting.
If it's something simple like a little piece of metal flake or something you can probably take care of it, otherwise you should contact RA to send it in (at least the barrel and gas block) for repair.