Folks, I would appreciate your candid advice. I have a pair of used Zenith carbs that came from our '73 3.0 CS. They worked fine before the engine blew but my mechanic preferred to replace them with Webers. My son-in-law and I had taken one Zenith apart and was pretty well cleaned with great care. The other is still whole. I have been trying to sell them on eBay with no success; I have posted the ad on this site and on the FB E-9 forum. What might you suggest? I don't want to make a lot of money on the carbs but I also don't want to give them away. Thanks for your consideration!