This afternoon I took 2 of my cars for a ride before putting them away for the winter. The first was a '71 Cuda 340. It ran great for about 3 miles, started running rough, then died. After I got it (hauled) back to my yard I replaced the ballast resistor, then it would start..then die. The next car was my 69.5 Superbee. That car ran good, then when I rolled into my driveway, it died also. Same deal...it would start, then die and not run. I happen to try the Cuda after 1/2 hr, it started and ran good. I went back to the Bee and noticed the ballast resistor was hot, put on a used one, and after a few tries got it to run enough to get out back to my building..then it died again. Not until I put in an old ballast resistor, would it run enough, fairly rough, but I got it in the building. Any thoughts ?