Hello I am new on here. I let the bike sit up for over a year. Took gas tank off cleaned it out took petcock off cleaned it new spark plug new air filters also new fuel line and filter. I took carburetor off and got local dealer clean it put everything back together. Now heres the problem....it fired right up but wouldnt idle unless I give it a little throttle..so I got the idle set and sounds like normal...took it down the street and it doesn run right at all..if I give it gas it acts like theres no power starts to bog down..shift to higher gear and goes a little faster then bogs down like not getting enough gas or air...so I adjusted the fuel/air mixture screw 2.5 turns out. ..still same..I tried adjusting the screw 1 turn out 2 then 3.5 turns out a little at a time..still does same thing...when the screw if further out it will backfire....thing is it idles like normal....I am at a loss for this...the bike has 900 miles on it and have never adjusted anything on it before letting it set up..is there anyone that can help