i have this same carb on my '58 235 with an oil bath air cleaner. On an hour long trip to a show, I noticed that I have oil coming out of the butterfly rod just under shoulder where the oil bath air cleaner is mounted. I have not changed the oil or cleaned the air cleaner media in a year plus time. Any idea what would make the air cleaner oil come out of the rod hole ? The air cleaner bowl is filled to the correct marked level, I haven't added any oil to the air cleaner.....