FLAT SPOT

[freddyc]

My standard strommie has a flat spot and is back firing, back through carbie. This is one of those reco carbies. Have replaced plugs, points and condensor also. The car runs rough at 60 kph, idles great. Flat spot is just above 1200 rpm. Any help appreciated 

[FX1975]

Hello,
    Check that all your vaccum lines are tight and check both timing and float level

                            Hope this helps
                                       Frank

[waynos]

i once had a two barrel strommie that whatever i tried  the flat spot was always there.it was second hand though.
have ya played with it much?
or ya just bolted on the new one and hoped it would fix the prob?
was it there before?