250-500cc Carb float ?

Ok , so I got a new needle clip cuz the last once was missing , and float valve cuz the last one was like 9 years old . adjusted the float level to the carb spec , I have a delorto vhsb and it said to adjust float tang parallel to carb base . Does anybody have experience with the tang needing to be adjusted differently than specs , running it the way it currently is makes the bike flood out in a few seconds , setting the tangs high ( with carb upside down ) makes it run . ? Any related problems or recommendations ?
Also if it makes a difference , because the way it comes out of intake boot and onto filter housing, tha carbs sits at a slight angle