Does the float have fuel in it???
When you took the fuel line off the carb theres a good chance that you have pulled the seat out a little bit. Its a brass insert into the alloy body. Ive pulled a few out trying to get the hard crusty fuel lines off.
I am not sure how you seat them back to the right spot. I am hoping i am about to learn something.
The image thing you want is the one with the blue arrow pointing up. Hit browse, find the pic, hit the upload PC button, then when it has uploaded (takes a while) then click done. The code will be in your reply box and the picture will appear when you hit Preview or submit.
Bob.