Donb, if the engine started smoking and liquid coming out of the muffler, this is a symptom of a rich running condition. No need to replace the carb, just a need to give it a little TLC, a good cleaning and rebuilding. Don’t waste your money on a clone carb for a thirty year old engine. You won’t be happy. You don’t really need a full overhaul kit, just needle/seat and float bowl gasket. Disassemble the carb and find a local repair shop which has an ultrasound cleaner. I used to run them through the shop for free if they bought the parts from me,