Sorry to take so long to get back to you, but I haven't been on the board much lately. It looks like you already got the info you needed, but just in case, here's my input regarding the crossover:
L6 and R7 are connected in series. C13 is connected parallel to L6 and R7, i.e., connect one lead from C13 to the wire leading into L6, and the other lead from L6 to the wire out of R7.
L6 and R7 are connected in series. C13 is connected parallel to L6 and R7, i.e., connect one lead from C13 to the wire leading into L6, and the other lead from L6 to the wire out of R7.