I actually can get all (pretty much) of the satellites from horizon to horizon (including L and C). The issue is that the process of doing so is god awful inconvenient.
The tech support at viewsat usa is, well, interesting. It seems to be one guy, and it felt like I was getting transferred to his cell. He was nice. His first effort was to try to get me to say I'd shorted the thing out by plugging in the LNB with the receiver on. Kind of funny...he said, 'well if you took it on the roof, then you'd probably do this at some point which would short it out'. The funny part is that he was convinced that something I would almost certainly have done would have destroyed the device...made me wonder about the engineering of the box.
He asked if I had a voltmeter around and then, judging by the fact that I had one on-hand, figured I wouldn't have any problem shoving paper clips into pin holes on the device. I didn't, so we got along great, but he got another call and had to go (?)
Anyway, long story short, I currently have a silly way to find satellites without climbing on the roof. It works, but it's painful. For anyone who stumbles across this thread with the same problem:
I start with a satellite I have. Add a new satellite "User Sat 1" in the Channel Scan menu. Go to the install menu and antenna setup and set the LNB (everyone has told me to use Universal, so I do that with high and low spanning from around 10000 to the highest value). Set the Diseqc 1 setting to the Diseqc port on your switch where you have L connected. Go to the motor menu with the red button on the remote.
Now the fun part. Move the satellite east or west for about 3-5 seconds. Save the new position (important to do this now, because the damn receiver crashes sometimes when you save the channels) Then do a blind scan. If you don't see any quality after 4 or 5 minutes, you're probably not on a satellite, cancel the scan. But most of the time you're hitting something, so let it go just until you have half a dozen channels.
Save these results. Exit back to the main menu and go to "Edit Channels". Find the channel # of one of the channels you just added. Exit the menus and switch to this channel. This is very important because we need to be on a channel from our current satellite. You'll see why in a second.
Now, we have to figure out what satellite we're pointing at and peak it. Here's the game: when you go into the antenna setup menu, the Q meter and the name of the satellite will show for about 2 seconds before disappearing for no particular reason. You may have to do this multiple times to get a Q reading. When you exit the menu, if you're on a channel from another satellite, the dish will move and you're screwed, hence the need to start on a channel from the satellite you're working on.
Figure out the Q reading, go back to the motor menu for the satellite. Do a 'fine move' and tweak the satellite 5 clicks to the east. SAVE THE POSITION. Exit back to the channel and then enter the setup again, get your 2 second Q reading, check if it's better or worse. Repeat this sequence moving a couple notches east each time and remembering how far you moved. If you go too far or you see the Q declining, go back west using the same process, saving each time. Repeat until you've peaked or shot yourself.
Now, go back to 'Edit Channels', remove all the channels which you added for this satellite before and do a blind scan. If the receiver crashes when you save, power cycle. Your channels have been saved. One satellite down...dozens to go.