I honestly think it just needs some time to wear-in. I used my original UMB for a week, but my sister didn't use hers as she was in Costa Rica on a trip, but when I was transfering her info to the desktop to return them for the UMBP, I noticed that her trackpad had a louder click and required a little bit more force to click.
I love the new trackpad. I found myself adjusting to it very quickly and almost naturally. I just adjusted to it without even thinking about adjusting to it, and when I went back to my old BlackBook, I actually tried to use multi-touch and click in the center of the trackpad out of habit. Keep in mind that this was after MAYBE 4 days. Just give it time. It's comparable to the iPhone soft keyboard and how you must adjust to it and learn where the tips of your fingers are.