Here we go...(A) How difficult is it to find a replacement for the stock rear muffler? Mines toast and I'd like to keep my '72 GT in as original condition as possible. (B) How the heck does the windshield washer activate? I've looked in the two service manuals that I've bought and zippo info. (C) I've got cold start problems which indicates the auto choke ain't happy. Can that portion of the carb be disassembled, cleaned and reassembled without removing the whole carb(it's the stock Weber)? Your responses appreciated!