Buttons not working correctly

My ‘b’ and ‘y’ buttons randomly stop working with my TE.

Sometimes in the middle of a game these buttons will not register inputs, they will go back to normal if some time passes or if they are hit or pushed repeatedly.

I already tried changing the buttons, and the cables that connect them from the inside, so I know those things aren’t causing the problem. I would like some suggestions about what could it be causing those issues and how to fix them if possible.

Since I bought the stick in june '09 and I’m from Mexico going with the warranty is sadly out of the question. So I would appreciate any help.

changed the cables inside??

The cables that connect the buttons inside the stick.