I recently received the same call from Dish Network needing to send a Tech to check things out. I had remembered reading this thread and made the appointment.
Before they came out (I have 2 HWS

)
Bedroom Hopper Sat. 61.5 showed 47-75 range readings Sat.72 was in the 41-51 range.
The Living Room Hopper Sat. 61.5.. 48-73... Sat. 72 41-51 range.
After he change some connectors
Bedroom Hopper Sat. 61.5 ..56-80 Sat. 72...48-60
Living Room Sat. 61.5..59-79...Sat. 72 48-57.
Bottom line was improved signal. He said at the connector near the LNB had some corrosion so he changed it. Since I recently just had the 2 Joeys upgraded from 1.0 to 3.0 he didn't have to go through the info sales pitch

The last tech that was here did that.
The last 2 tech's that have come out February and May have been very nice and helpful...overall positive experience...YMMV
I also shared some of
Scott's recent Team Summit info which I will post in that thread.
Thanks Satellite Guys

for making me a more informed consumer.
Steve