I will double check the linkage tomorrow. There isn't a pcv valve at all. Just one of the breathers that I have listed on each valve cover. I found that strange, but that is how I received the engine right from the engine builder. I called moroso earlier and the guy told me that these breathers are meant to be used with an evacuation system tied in with the headers, and by having one of the breathers hooked up to the carburetor it may be pulling too much air into the motor leaning it out and causing the high idle. I just find it strange that it is making that big of a difference just by hooking a breather up.