I had the carb on my 1982 Toyota rebuilt due to not starting unless I hit it with ether after sitting for a day, but the issue I'm having now is when I give it gas under a load it will give that sucking sound and have no power at all when trying to drive the vehicle in gear unless I really goose the gas . Do I need to mess with the air/fuel mixture screw which currently has the metal tab blocking me from adjusting it? I'm at a loss with getting this to run properly.