ok so after switching heads and doing valve lashing i didnt touch the timing belt i left it the way it came off the cam gear and figured i could just slip it back on without having to worry about timing. Everything was TDC but now it idles raugh and when you twist the distributor it either runs "better" or worse better being still crap. and when i give it gas it hesitates at about 4500rpm for like half a second? could this be because my timing is off? this is my first project so any help would be wonderful!