i just rebuilt the carb now it runs worse

ok it's a stock 225 slant six with a holley 1920 1 bbl i just rebuilt it now when i'm driving in the city it's fine but at 65+mph it's running rough and it has bad run on and smokes while it's running on the smoke comes out of the air filter i'm thinking it the timing but why is it worse now that i've rebuilt the carb i'm thinking on my next day off i'm gonna replace the plugs and rotor and cap i plbably should do the wires as well but i can't afford that right now not with getting married in 5 weeks :shock: i can't believe i only got 5 more weeks! but anyways got any ideas about my problem

thanks
rob