ORIGINAL: S IHI II IB IB Y

hey i got a similar problem... dont wanna leech ur advice or anything but just bought a brand new 70mm throttle body, vortec TB spacer and MAC cold air induction kit. it worked fine right away didnt have to mess with idle or anything it was great then it started boggin a little, no biggie came back ok after a couple of days. THEN... punch it bring it down slow no matter what i did with the gas pedal it would stay at that rpm and come down REAL slow... then it got worse where it would just stay at that rpm and not come down, and finally tragedy struck. went up after release of gas pedal. im really utterly confused cause im BURNIN my clutch tryin to keep the rpms down at stop lights/signs. as soon as i take it out of gear its as if i floored it and didnt let off. havnt let it hit the RL yet but its gonna sooner or later and i dont wanna blow anything. pedal doesnt stick either by the way... checked that. im wondering if i need to change the injectors to 24# or something? i dont know what to do with it. but also if i am half clutchin it while stopped even tho the RPMs are down air is rushin somewhere and i think its in the TB thats really the only place it could be but i just need some advice cause im stumped and id rather not go back to stock if i dont have to. thx guys!