I have a 93 honda civic hatch DXithas the D15b7 in it, it's mostly stock, the crank pulley has fallin off a few times and has been put back on, finally the crank pulley needed to be replaced, i put one off a 95 EX. now i hear the pulley again, and i can grab it and move it back and forth, is it just the pulley or could i have messed up my crank? also could it be because of a crapy key i used? we made it out of a woodroof key. any help would be great