I can't help but notice that you find the glider lean. Most find the glider on the warm side. My experience is the same, that is I found it not "lean" enough. Actually, I had the glider at the same time as the bps, and I found the glider extremely lush (along with more detail) compared to the bps.
It actually sounds like another anomoly happening here. How is your vta? From here this is what I would guess is giving you this lean sound.
It actually sounds like another anomoly happening here. How is your vta? From here this is what I would guess is giving you this lean sound.