fastsilvergs

I just traded my '06 GS 300 (non-ML audio system w/o SAT or AUX) for the new '08 GS 350 (non-ML audio, w/ SAT & AUX). The FM and CD audio levels are a little lower than they were in the '06, but still good; however, the SAT and AUX audio levels are very low compared to FM and CD. Anyone know if the SAT and/or AUX levels can be adjusted? I've seen posts about there being level adjustments on memory buttons 5 & 6 in the SAT3 mode. Has this been removed in the '08 or is there a procedure to activate these settings? Any information or feedback on this would be appreciated.