Is there any screw that lets to tune the trackpad's sensitivity?

Is there any screw that would let me tune the trackpad's sensitivity to PHYSICAL clicks?

My Unibody Aluminium MacBook has a screw that lets to change the trackpad's sensitivity to clicks.

My MacBook Air (Late 2010) 13" is not responsive to clicks in the bottom right corner. It changes sometimes with temperature and the way it is being held on the lap.