Left click requires too much pressure.

Hello internets,

So I`ve replaced the micro switch in my MX and it works fine, but the problem is that after I assembled mouse back it works weird.

So usually I press on the middle of the button with the tip of my finger, but now it doesn't work that way it registers the click only if I will apply unreasonable amount of pressure or if the finger is "laying" on the button and I push the whole button down.

So if anybody has some ideas what might be wrong and how to fix it I would really appreciate any help.