1) My R-90 has a Pioneer 6-CD changer in it (which isn't mentioned in the manual). The volume from it is much louder than that from the 45's. Any way of balancing that out (I rigged up an in-line volume control, just wondering if there's a built-in way). 2) The CD changer will only play 14 tracks. Any way to adjust that? Thanks in advance, John E.