I've got that same problem too! It more so happens when it is a little colder out (like under 50 degrees) BUt, yeah, it sticks enoguh to where you've got a give it some "oooomf* to move the sucker, and then you end up taking off like a newbie at a stick, or revving the the thing to 3000. Help also!
I believe it is something with the linkage under the hood. Someone confirm and explain How-to!?