I will start from the beginning to make sure no details are left out. my 'Cuda broke the rocker shaft on driver's side on my 340. Frustrated, I let the car sit for two months. So, the ethanol did a number on the pro comp carb. I got a kit and rebuilt it. I installed the carb and started the 340. It runs but starts out idling at 1100 rpm and soon dies out. I can feverishly work the throttle to make it run, but it isn't close to running right. Adjusting the timing has no affect on how it idles it seems. I have adjustable 1.6 rockers on aluminum heads and a solid roller cam. I am running a Mopar performance distributor and orange box and resistor. Manual 18 spline trans. About to give up and shoot the motor and crush the big block body because all this thing does is let me down. Figuratively speaking of course. Thanks for the helpful advice I always get from the awesome members here.