Macbook Pro TrackPad Advice Needed!

Hello all, as the title states, I need some advice. My "early 2011" Macbook Pro 15" is having some very annoying trackpad problems. Currently, a normal one finger tap is for a normal select, and two finger taps are for right clicking. But, randomly, usually if I physically click it, it will get "stuck" in a right click mode no matter what I do. The only way to fix it is just to click sporadically until it goes away. I have tried to live with it, thinking it is just a glicht and will be fixed. But, no update has come. I plan to take it to "The Genius Bar" but I want to know, can they clean it, or will they have to replace it if it is indeed a hardware problem? In the end, it doesn't matter to me if its fixed. Also, I have tried re-assigning a right click to other actions, but they aren't my cup of tea.

Thank You

(Ps: I have apple care, so will I be charged if it does need mending in anyway?)