Macbook Air Trackpad Hard to Press

[Rlkv011]

I recently noticed that my mid 2013 13" macbook air's trackpad is very difficult to click. I took it to the genius bar thinking that the battery might be swelling but they said the battery is fine. I decided to open up my air and check out the trackpad. I adjusted the clicker screw by the trackpad and it helped a bit but it still feels much harder to press than normal.

Has anyone else had this problem and how did you fix it?

 

[Brian Y]

Might have dust under it. Does it feel the same if you click in the far left and far right corners?

 

[Rlkv011]

Both sides are pretty much the same. I would say bottom right is a little bit stiffer. When I opened it up and removed the battery the trackpad itself looked clean.