thanks mental1
Well the Association already pretty much sent out a letter saying that we would have to pay $150 per drop. The condos I live in were built with what appears to be a rather loose regard to specifications, so measurements vary quite a bit from the blueprints and walls from floor to floor don't always stack up so well. I get the impression that sometimes the installer spends a very long time getting the wiring done, so maybe the $150 is averaging out for him. I think he got picked in the first place because he was the lowest bidder on the project.
He actually showed up at my condo by surprise over the weekend and it turned out there wasn't any need to install an SWM under my condo because he had already attached one closer to the dish. So he plugged the satellite wire into my existing cable wiring. On the next floor he attached some kind of metering box to the cable wire as it arrived at the outlet, and said the box showed a signal strength of around "46". He said the TV would run fine on that signal strength, and indeed it did.
He replaced the splitter behind that outlet with a DirecTV-type splitter, and we went up to the next floor, where he measured the signal strength where the cable wire arrived at that floor. This time he said the signal strength was around "60", which he said probably wouldn't work. Then he realized there was another old splitter behind the outlet plate, so he removed the incoming wire from that splitter and checked it on his signal box again, and measured the signal strength at "55". He said "55" was right on the edge -- might work or might not.
When the receiver on that floor (HD-600) was hooked up, it was able to download new software for the new dish/wire set-up, and also downloaded the guide fine. The TV seemed to work at about the same level as it had previously (parallel diagonal lines on the screen, pixelation and occasional halting of the image). Since the line and dish were changed but the problem had remained the same, and since I was able to play a DVD on the TV with no screen problems, both the installer and I agreed the problem at this point would likely be with the receiver. So I called up DirecTV and they are sending a new receiver on Tuesday...