'Sticky' throttle question

[limeyd]

My GF and i took advantage of the warm weathger on subday and went out for a great drive. We actually met up with soem folks from the Ducati club i belong to and we had a blast driving in the country trying to keep up with a bunch of Ducatis )
Anyway, on the way home i noticed that the RPM was not returning to the idle mark when i removed my foot from the gas peddle. I put my foot under the gas peddle to see if it was the actuial peddle that was sticking but that was not it. Obvioulsy soemthing in the linkage is sticking, can anyone point me in the right direction and tell me what i should be looking for. The actual symptons were if i was in 5 th gear and removed my foot from the gas peddle, it was almost like having cruise control, i also noticed that the idle, when it finally returned to idle, seemed to be higher than normal, about 1.5 k.
Im assuming that this is just another of those pesky teething problems, car has under 1k miles, Roush 402r with a TKO tran.

Thanks in advance for any help
cheers

David