Got a 79 notchback 5.0l 2bbl carb was out of tune bad when I got it po said it was a recent rebuild looks to be quite fresh unfortunately after tuning the carb in the car ran well for a day or so then carb seemed to detune itself... It will idle decent an the second you touch the throttle it start shaking a bogging like crazy. I've rebuilt an cleaned the carb an still no luck.... Saw some junk In the jets once but nothing since then.... Any one have this problem or any thoughts??