I have run into a problem while installing my new intake mani. It is a skunk2 type R style manifold. The car seems to be acting as if there is a vaccum leak somewhere. I replaced the manifold gasket. I did not replace the TB gasket...It was replaced about a month ago, but maybe it didnt seal right this time?? I have searched up and down for this leak. It does not seem to be coming from any vaccum lines. I have rechecked all the lines numerous times. I took off the IAC and checked the rubber o ring on it. It seems fine, but maybe if could be replaced?

Does anyone know any tricks to finding a vaccum leak?
Does anyone know of something i could be missing?