heat is needed if plastic or aluminum venturi/carb housing must come off....it is keyed to a crankcase flat so it will not spin/ turn off....thin knife blade to pry straight off....exacto blade too brittle be careful....unless carb body is cracked or damaged leave it the hell alone!
I prefer the readily available plastic repair parts...I have 5 higher cost aftermarket aluminum on my TeeDees....heavier, leak prone, and usually twice price.....