Bent Pushrods on a rebuilt 318

exhaust valves were dragging in guides and seizing up from lack of oil to valve stems with the shafts on upside down. you may still have a problem if you burned the guides also not much oil coming out the oiling holes only on 1 rocker arm may improve with shafts on right, you may have started premature ware on cam and lifters if guides were seizing up bad.