Anyone have a picture of the correct position for rear gas tank mounts?I'm trying to put them above the crossmember lip,with the cage nuts facing to the top.I got one side started,but can't start the other side,because the front seam of the tank is touching the crossmember above the rearend.Should they go below the crossmember lip,which would lower the back end of the tank about an inch and a half?Thanks.