While continually trying to click your trackpad, gently tighten the Y1 Tri-wing set screw until the clicks return to their factory "feel".

You can tell when the screw is tightened just right by the noise it makes when the trackpad clicks. If the set screw is too loose, the trackpad will have excessive play before it clicks. If it is too tight, the trackpad will click too easily and won't make the characteristic loud mouse clicking noise.