First, if you are using an SWM LNB with single line you MUST use the power inserter and do NOT use the BBCs. Don't even be tempted, it won't work! Then you need to use correct alignment procedure for the slimline dish. You can't just point the dish vaguely in the correct direction and hopre to get signals.
Go to dishpointer.com and get the correct pointing coordinates for the slimline dish for your location. Make sure the dish mouting pole is plumb vertical. If it isn't you will have a lot of problems getting correct alignment. Make sure azimuth, elevation and tilt/skew are set to those coordinates.The key here is that the dish needs to be pointed at the 101 satellite to start with, it's a waste of time looking at the other signals until you have good 101 signals, so set your receiver to show all the 101 transponders. . Move the dish to the left about 5 degrees in azimuth from the dishpointer coordinates and then slowly move to the right, watch the 101 signals come in. 101 live transponders will be all 32 transponders. A few will be low or even zero because they are spotbeams pointed at other cities, but a cortrectly aligned dish will have most TPs in the high 90s or even 100. For example, I just checked mine here in DFW and I have 13 TPs at 100, and my lowest non-spotbeam TP is 96. If you see a specific pattern like only TPs 22-32 you are pointed at 119 instead of 101.
Once you get 101 signals, adjust the dish in azimuth and elevation until your 101 signals are (mostly) at least in the high 90s. If they are not, then unless you have something blocking the line of sight to the satellite your dish is NOT correctly aligned and it is a waste of time looking at 99/103.
So now if you have decent 101 signals (and 80s is NOT decent) look at 119, since you have a 5LNB dish. 119 should show some transponders in the high 90s or 100 - again, here in DFW I show 96-100 on all the non-spotbeam transponders (just like 101, 119 carries a few spotbeams). If 119 has lower signals, you might be able to improve them by a small adjustment in elevation, but don't screw up 101. Also you don't tell me where you are located - if you are in the East then 119 is the lowest satellite on the horizon and is more likely to be affected by obstacles like trees. But 119 only carries ethnic channels and a few religious/music channels so that might not be a concern.
Let's assume you now have decent 101/119 signals. Now look at 99c, 103ca and 103cb. All the TPs should be in the high 80s to mid 90s. If they are not, small adjustments in the azimuth and elevation fine-tune controls should bring them up to spec. Do NOT worry about 99s and 103s. Thos are ALL spotbeam transponders and so it's quite normal to see low or zero signals on most of the TPs. In some parts of the country, all the signals on 99s or 103s could be zero.
there are several youtube videos which might help you if your first attempts at this aren't successful.
There is a technique for getting peaked on 101/119 called "dithering" but I am hoping you can get there without it.
All of this might seem very complicated but once you have done it a few times it will seem easy. Many professional installers will tell you you need a meter to get this dish aligned but I have aligned slimline dishes many times using only a receiver.
