I believe its an issue with the Twinhan software, if I go to a different driver version 82W goes to S98 Q98 the only problem with that driver is the only other signal and quality readings are 22 nothing in between.
The values of the reported readings have little value when compared to other equipment that's why I compared my readings on AMC9 to other known powerful satellites.
The quality reading (the important one) is a bit less on AMC 9 than that of PBS Montana, as a rough idea I expect if your receiver was substituted for mine and it reported a quality reading of 80 on PBS Montana it would read somewhat less, maybe around 70 on AMC 9.
Comparing quality and strength readings between different receivers can be very confusing, what I can say for sure is that it is one of the weaker signals but its several steps for the readings I get above threshold and has been quite reliable.
The are several issues with AMC9 in this part of the world, its one of the weaker birds and we need a dish of at least a meter.
I believe the biggest problem is Nimiq4, it's only 1 degree away, our sizes of dish have a wider beamwidth than that, plus it's one of the most powerful birds in the sky. Even if we are 100% perfectly aligned on AMC9 our LNBs will be seeing a very powerful signal from Nimiq4, some may have problems dealing with this, that's why I thought experimenting with different LNBs would be interesting if someone had a drawer full of LNBs and lots of time to waste.