Wanted 4 motors for the Phantom FC-40

[terrygar]

I just bought a used fc-40 and the original owner used the prop guards, when he took them off he used the wrong screws to re mount the motors. So I saw what I thought was the mounting screws backing out, so I asked a forum and they said just tighten them with locktite, I did now 3 motors are binding???? I need new motors, HELP