Had a install done last night. Added another DVR and had to go from a SWM 8 to a SWM 16. I have no problem with this set-up. Everything works, and the installer asked me before he was done if I wanted the cabling shorted up any. To me it is fine. But why did he use the 8 along with the 16? Is this normal? Curious more than anything. Pardon my dirty patio. Thanks!