Whats wrong with my sports bike?

I have a 1986 Yahmaha Fj1200. Its nothing sepcial to me i plan on buying a harley next year but i figured i would buy this bike first since i'm a new rider. Uhmm i just had the carbs cleaned and had the jets and floats replaced in the carbs. The bike starts and sounds good but the throttle does not pop back it sticks and it almost like cruise control. i have to pull the throttle forward in order for the bike to decelerate. whats wrong. I greeced the throttle whcih is what a web site said to do but that only helped in a little. Any ideas?