As i wrote a lot about the X-56 here in the past, i want to add the update to this thread:
My X-56 by now starts to develop a problem, which none of the older ones ever did, merely for the fact that they died long before they could get this problem. The X-56 presses a conical piece of plastic into the base to re-center the stick. This was very precise for me over several sticks and many years. The stick i am using by now is slowly building up tolerance there.
It seems like the hole in the plastic started to wear out. The centered stick now can move around like a fraction of a millimeter while being centered, without moving the centering cone. Which means that i can move the top of my stick for like 3 to 5 millimeters without it re-centering.
My current fix is to simply have a tiny deadzone, i don't see it as a problem yet. Time will tell if it turns into a bigger problem if i have to fix it. (While i have no idea yet on how i could fix that. )
I guess in the end my posting here boils down to my conclusion that what Logitech did to the cables improved things a lot. About half a year or so ago i had to re-solder one of them, otherwise the Logitech-built stick up to now had no problems. It definitely is a vast improvement over the old Saitek versions.