More EGR Investigation

After following the troubleshooting steps in the manual, I see the two ported vacuum thermal switches are bad. The full manifold vacuum that goes into one port is getting sent all the way back up the chain to the ported vac connection on the carb, screwing up pretty much everything. I can get new ones easily, about $35 each. In the meantime, I have plugged the manifold vac hose which seems to only affect the thermac door on the aircleaner.