You have to line it up. Thats probably why its running so crappy. Its slipping on the cam instead of locked in. Again take it out, line up the keyway and push it in. If it doesnt go in then you have to try it 180 deg rotated. Again it will lock into place when fully in.
Get that straight and you will probably be good to go.
Get that straight and you will probably be good to go.