So should I remove both keys and re install them making sure they are clocked the same?
They say it won't help unless you return them [torsion bar] to the same manufactured position. Unless you marked them, or locate the markings on PS bar & compare with orientation of markings on DS bar, that's about all you have to go on. The bars on my truck had some blue paint & letters/symbols of some sort that I never paid attention to until after I R&R the keys.
I would suggest rotating the DS bar like I did to remedy the issue but it's a lot of work and may or may not offer the same result. Could be that 1 bar is more worn-out or factory defective but if your OCD like I am you will surely make a run at it. Which I don't blame you
I have since pondered on the whole fiasco & wondered to myself if rotating the TBs 180-deg from the manufactured position would offer a new level of support as the bars would now be torquing from a different range, {no longer in the same stressed position where it just sat for 15-years} if that makes any sense, but I don't have the time or space to apply such a theory. And then I remembered how I kept the PS bar indexed correctly while only losing track of the DS and it being the 1 that lost range/strength as requiring more adjusting to reach the same tension/level of PS and kind of gave up on the idea. then again your situation could prove me correct in my theory if you happened to return the DS bar within the same original phase & the replacement key exacerbated an underlying problem with degraded bar. Clock it to a new phase and get some lift/rebound back out of it. Def worth a shot as those bars are expensive and swapping a used piece on there is a gamble.
If 1 were to phase the bars differently, clocking counter wise on the DS would lose support, while clockwise from the orig position would provide more tension, in theory. This would be opposite for the PS accounting for range of motion within suspension. 180-deg out of orig position would account for loss. It [tor bar] would need to be turned/phased 0-45 deg toward the center of vehicle from the manufactured/original position to gain any lift or further support
I hate to always write 2-3 paragraphs but if I'm going to offer opinions & advice I want to be detailed & concise as to avoid any misunderstanding of what I'm trying to communicate.