I've rebuilt my '66 1100 with a kit and the best parts from my 2 carbs. I still think the performance may be subpar. No vacuum leaks and timing seems right. Are there any other remanufactured carbs other than the ones from Pony Carbs that are any good? I once bought an 1100 replacement at Advance Auto Parts, but that was crap (the carb, not the store).