did a b18b1 swap in a 96 HB .. looked like head gasket was blown so i did a head gasket job .. misfire in cylinder 2, 3 , 4 .. like wtf .. at first it was jus 2 and 4 .. now im gettin 3 too .. did spark plugs and wire .. same thing .. havent mess with the dist yet .. motor shakes and rock at start .. but after it warms up it kinda calms down only but still shakes and rock .. any input would be great .. thx in adv