HEY! I have that exact same cement mixer! I have almost worn it out with all the small projects I have done with it. I too have all the front sheet metal off so I can get at the engine better. I used the steel exhaust gaskets. The trick is to really clean the surfaces on the manifolds and heads so they are as flat and smooth as you can get them. That paint is good but, yeah, it may smoke a bit until it is cured. OK I will post the carb stuff in a little while. I am kind of busy today. Stay tuned and happy Memorial Day. As an Army vet this day is special to me.