So i once cleaned my controller, took it apart and put it back together. After some time the R2 button was broken. I took it apart again and saw on the ribbon foil a scratch. I ordered a new foil and replaced it. Controller worked fine again. Now not even half a year later, it had the same problem again. Now there are other marks (Photo). I don't know if something is scratching on it and if, it should be the "touchscreen". The part is seen on the photo too. Am i doing something wrong with attaching everything back together? I don't want to buy a new foil every few months again...