help with idle

thanks again for the help guys im gonna check over the intake boot and make sure it is tightened all the way down I think this might be where my problem is coming from cause I dont believe the trottle is sticking but how can I double check the throttle isnt sticking?
 
and what should i look for when looking at the slide from the intake opening? Is it possible the throttle could be sticking inside the carb but seems to be working fine when testing at the thumb throttle?
 
thanks for the help man gonna mess with it in the morning and hopefully get it figured out ill let you guys know how it goes