I have an Echo SRM-225 Trimmer. The spool for the line has an L on one side and R on the other. I took it off without noticing which side was facing up or down, although both sides look the same. Does anyone know if the spool is directional somehow. I don't know why it would have an L on one side and R on the other if it wasn't, but it looks symmetrical. Any help is appreciated. Thanks.