Controller thinks R1 is being pressed down

The R1 button is not being pressed down but it thinks it is.

Here's a picture showing that it thinks the R1 button is being pressed.

http://ift.tt/2tDCpwp

Closer look at the controller

http://ift.tt/2ud3kMy

Anybody know how to fix this? Thanks

EDIT: Fixed it. Took controller apart and that just seemed to fix it.