Having of trouble changing the starter on a 2013 vx sport. Finally got the old one off but can't get to it to put the new one in. Can get it started but can't get the o ring to go in. Oil, gease,etc just can't get a good push. Have tried to take the exhaust manifold off but it seems to be stuck, don't want to hit it too hard. Any suggestions besides giving some $500 to do it?