I was just watching some videos on You Tube about checking and adjusting Edelbrock floats. I am going to pull the top off the carb to make sure the floats are not stuck and at the correct position and also that the needles/seats are clean. Is it necessary to replace the gasket between the top and the body of the carb when putting the top back on or can I reuse the existing gasket if it's not broken or brittle?