Guy brings over a holley 800 4780 that was nasty, absolutely caked with white junk and dried gas deposits. He just wanted it rebuilt, nothing fancy. I gave him my usual price of $50 plus the cost of the kit. He freaked and said other guys didn't want to touch it since it was so nasty. I laughed and told him all you have to do is take it apart and boil it in lemon juice. He didn't believe it so I told him to just come pick it up tomorrow and it'll be good as new. Carb came out and looked like new, I installed it and hardly had to tune it. Worked great. He tried to give me $300 and I told him keep your money and send me some referrals. Anyway, if you build your own carbs and stress over ugly ones, don't spend a bunch of money on carb cleaners and buckets of cleaners to dip them. Boil them for 30 minutes in 1/2 lemon juice and 1/2 water. Spray orafices with carb cleaner then blow it dry. It'll be good as new. You guys may already know all that, but it does work.