bad coil ground?? missing badly after moving coil

rechecked the wires for the 10th time alls good their it runs rougher at times then clears up a little then goes back to running rough. checked fire getting blue spark sometimes and none others i think next ill take all wires loose clean and tighten. the only thing i took loose other than the intake was the coil and dist. it almost has to be a bad ground or is there any chance the carb could be acting up