Ignition woes

for whatever this may be worth, i didnt read the whole thread. i recently , and i mean like a week ago, with having already done the MAD bypass, and with standard EI in my 73 duster, i would start the car, in a few minutes it would die, kapoot, like someone shut the key off, it would re-start, then die . over the next two days it gradually got worse, to the point where it would crank and crank and then finally start, like it wasnt getting fuel. i swapped a couple ballasts , no change, i swapped another ECU box in it , no luck, checked this and that over and over WTH ? i finally pulled the new ECU box, and with a vengence, i took a fricking flap disc mounted on a grinder to the mounting tabs to the ECU box, and to the spots where it bolts to the fender apron, and guess what ? WALLAH !!! BINGO that was the problem , working perfectly once again AND i plugged the old box back in after doing all this , NO WORKY, and the new(old) box didnt work the first time either

just a thought