Whose reman carburetor? One thing you can try is with it running and the air cleaner removed, slowly close the choke by hand and see if the engine will continue to idle with the choke almost or even closed. If it does, that's a good indicator of a vacuum leak, which will cause one to run rough. Also make sure the carburetor mounting screws are tight and the smaller screws the hole the carburetor together are also tight. They are notorious for loosening up, especially with new gaskets and often need to be retightened after a few heat cycles.
