In St George and need help getting my truck going. Not sure if its a timing or a fuel issue. I've fixed all the vacuume leaks. Brake booster, intake manifold gasket, and a refurbished carburetor. Edelbrock 600 1405. Still idle roughs surges in first and second. Been here a month trying to get this resolved. An old school mechanic would be great. Thanks for any referrals.