A DirecTV is out trying to fix a problem I have been having for the last few weeks with the picture freezing up on one of the media centers (HR34). I have checked everything with the system and have even changed out a few items (cabling, switches, etc.) thinking that might be the problem but to no avail. Anyway, the tech just told me that my SWM-16's were not cascaded properly (coming off the legacy ports of SWM-16 #1 to the inputs on SWM-16 #2 inputs) and that I actually needed a SWM expander in order to get the SWM-16's to work properly. I have been cascading SWM's for years (SWM 16's for the last year) and while I don't mind him changing it out, is this correct?