tcporsche

Hi guys,newbie here.engine at TDC cam marks lined up with cap marks.larger holes on cam ends facing each other.when I removed ex.cam on pass.side to replace tensioner seal cam popped up from valve spring pressure.tensioner tool was in .removed cams and chain fell off ex.cam (lost mark on chain and sprocket)reinstalled cams and cam timing mark was 3 teeth CCW to cap mark.moved chain on sprocket so marks lined up again,but now no pressure on #3 valves.16 rollers bet.marks.Will this engine run properly?Thanks T.C.