CBF 600 goes out while giving gas

Hello fans My CBF 600 year 2007 can be started after longer service life with Choke and runs quite and poorly warm. Do I catch the gas attack only once when running warm… is it off. After warm run phase when the Choke becomes inactive it also goes off. Do there exist two different fuel circles of which one could be clogged? The problems were already evident at the beginning of the last season, but have given itself again at the start, what this with me in the Now the problem is there again, and so I couldn’t even get the machine into the workshop. Another problem that has been pending since purchase, but the HH only waved off, is that the front brake squeaky. It makes me crazy if I can’t even walk into the irons at the traffic lights in the city without all the audience on the street turning around after me. The dealer bagatellis and says… is just like that. Can you do something or will I just do something about it? If someone had a tip, I’d be a little happier again.