i had similar problems with auto detect not working properly..

so i adjusted the crossover for the fronts.. and set them to small, then I turned Tone Defeat ON.. and it worked.. before that I would get the small fronts, large surrounds issue.
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Outlaw Audio 990 pre amp
Adire Audio sub (SVS 12.2 driver)
CAL Alpha tube DAC
Parasound P/HP-850 2 CH pre
Pioneer PL-530 TT
Polk Audio SDA 2B
NAD 2600A amp
Danger Boy here