FabFilter

Using Pro-R2 v2.04 in a 7.1.4 Atmos mix, I’m noticing that in the “Surround Settings” panel the “Center” and “Top” controls don’t seem to work correctly: They only seem to have any effect from roughly -10dB and below, from the -10dB to +6dB range they appear to do nothing. What’s going on here?

While I'm at it - it would make much more sense to have individual level controls for L/R, C, Ls/Rs, Lsr/Rsr, and top like every other surround reverb on the planet - sometimes you need to drive the rears harder when mixing to surround theatrical formats vs Atmos formats - am I missing something?

thanks!
Rich