>During early of cart installation, I broke the blue tonearm wire at the clip, which is for the left channel. I solder it back, does it affect anything?<
Well that might explain the channel imbalance. And the 10X4 is a pretty light cartridge, but I would have thought the range of adjustment on the Spacearm would handle it. I believe I remember it said that Tom Fletcher offers a heavier brass ring that would fix your problem. But now you are at the mercy of Audiophile Systems, and God be with you on that journey.....
Oz