I own a sports bar, with 22 receivers located with TVs throughout the bar. There are 6 H24-700s with AM21, the rest are H20-100 or H20-600. I have the slimline 5LNB dish, with the four feeds each split using a widespread diode steering splitter, with one going to a WB68 (unpowered) and the other to WB616 (powered) and from there to each of the receivers, with each using a B-band converter since this is a non-SWM system. There is a separate run from the rooftop antenna (no diplexing) for each TV. I'm happy with how the antenna functions, no issues there. The cable run from dish to splitters is probably 25-30 feet, the cable runs to TVs ranges from 40 feet to nearly 150 feet, with most probably in the 80-100 foot range. I sometimes have problems with channels like NFLND, ESPNUHD (but hardly ever ESPNHD or ESN2HD) I see problems with delays when changing channels (lots of "searching for signal" messages for a few seconds before channel gets changed) and see some signal strenghts in the 70s and below. On a couple of the receivers connected via the WB68 I see 0 signal strength on the 99* satellites, on most others I see lots of 70s and 80s on those satellites with a few lower down in the 40s. It has been this way for a while but as I have time to deal with it right now I want to see if it can be diagnosed and fixed, I just don't know where to start. I google for the types of issues I'm seeing and some people say it could be a bad dish alignment, others suggest a bad LNB on the dish, maybe I need a polarity locker and/or amplifier due to some of the cable lengths. I know I need to investigate multiple things, I just don't know where to start. I guess as a first step I should have someone out to check the dish alignment and fine tune if necessary, but when I have them out I want them to do other tests to verify the LNB in the dish and check the signals. Is there something they can do to check signal strength in the cables themselves since I've read that what the receivers report is not all that reliable? How would I know if I need an amplifier? If everything is function as good as possible, would an amplifier make it even better (i.e., even better able to resist rain fade, etc.) I'd be willing to pay a couple hundred bucks for that, but don't want to bother if there is some limit to how good the signals can get and an amplifier is pointless or possibly even makes things worse (can signals be TOO strong?) I'm also confused about the need for a polarity locker. Some people say you don't need one if you have a powered multiswitch, but I have one which is powered and one which is unpowered - and I tend to see more trouble on the unpowered WB68. So perhaps I could benefit, or would it be a waste of money? I've heard it helps on systems with cable runs over 100', and those that see slow channel changes, and that sounds like my system. I see the slow channel changes on pretty much every receiver, regardless of which multiswitch it is connected to - even on those that are on short cable runs. Anyone know what order I should proceed in this project, and what exactly I should have the satellite techs do to investigate other possible problems when I have them out to check/tune the satellite alignment? Once I know what the problems are I can order the parts and put them in myself - I'll do anything except work up on the roof I just don't want to start ordering parts and installing them and hoping to fix something and not taking care of whatever the real underlying issue(s) are. Thanks for any help or suggestions anyone can provide!