Slow throttle return on 01 cr 125?

My bike has been sitting for over a year and I went to crank it up...started great I put new fuel and gear oil in it. But I found the throttle turns but is really slow to return back. I stopped the engine and played with the throttle and it was still the same. I would turn the throttle and it wouldnt snap back to closed position it would slowly come back. So I tore into the carb and checked the slide it was clean as could be. Could it be a bad cable in which a new cable would fix the problem ? or could it be a bad throttle barrel or whatever its called that the grip gets glued to??? I think I might try to lube the cable just to see if thats going to fix any of this problem and ideas guys? Anyone had this happen?

You know Marcus you could be right...I switched out handle bars that could be a mistake that I made thank you I will check that out.