At a loss... HELP

That's all tuning. You need to bring the inital timing up to 18*. Increase the centrifugal to give a total of 38*, and get the lightweight spring to get the advance moving earlier. Then slow the idle speed down to 6-700 using the idle speed screw. Then reset ti idle mixture screws to the best hot idle vacuum reading, then back them out 1/8 turn. Then see what it does in gear. It sounds like not enough initial timing, and a lean carb at idle.