[RICK LAKE]

patrickt Pat are you running ANY rubber hoses from the fuel tank to the carb? Where are your fuel filters at and is there ANy rubber hoses after it?
Pat over the last 1.5 years there has been a problem popping up with lawnmowers, tractors, COBRAS, and racecars with idle problem. It doesn't matter if it's a carb or FI system. Injector fare better because of the extra fine screens on the inlet side of them. The rubber is breaking down inside the hose and mirco particals are clogging up everything. Sometimes the spes can be seen and are black, brown, or off white with a good magnetifling glass. All lines in my car are SS but where the fuel pumps go to there mounting plate. I have had to replace the hose all ready. You may need to look at any rubber hose on the fuel system needing replacement if this problem pops up again. As far as coatings on Holley carbs. I have not seen this coating problem happen with new carbs. I have seen problem with old carbs and the coatings are missing or peeling off.