Mirror and linear pattern do not work for extruder feature

Hi everyone, I have encountered a weird thing (see images). There is some extruder features, some mirrors and linear patterns in the part . When I try to do a mirror or a linear pattern for the blue feature I got more than what i need. See the images of "before mirror", "mirror" and "after mirror" and the Solidworks files 2009 version. Basically, I try to have 2blue branches on each green branch like in the "before mirror" image.

I have no idea why that happened and really hope you guys can help 'cause this has been driving me crazy.

Thank you!

SolidworksParts And Features