carburetor problem

Hey guys, I'm new to this site. Since I bought my pitbike 7 months ago I have had to run it with the choke on, all the time. I tried to adjust the carburetor with the choke off. But it just turns off. If I keep revving the engine it won't turn off. Also when I get to third/fourth gear it sounds...

Hey guys I have a Demon X XLR140 and when i ride it i can have it in any gear from 1st to 4th and when i am barely on the throttle just putting along to almost half throttle it spits and sputters and i cant think of why. the main needle thats hooked to the cable? idk. also i had another question...

Hi, When i try start my bike it takes like 5 kicks to get it started. And a couple of those kicks i get kickback. Is there something wrong with the bike? I just got it today second hand. Once its started though it goes mean. Any help would be muchly appriciated. Cheers