I agree that effed things up, but that ship has sailed. The wave train in the Pac is such that the mean ridge is too far west. Idk, the tendency for a big ridge in that location looks Nina-ish to me, but whatever the causes, without the blocking and the trough/cold dumping out west, there isn't going to be much to inhibit the SER until there is a progression in the longwave pattern- we at least need the western ridge axis near the west coast.