I have done it today!
To make sure I dismounted the entire octave mechanism ( not without swearing a bit)
Another thing I had done before ( and maybe I should have simply stopped there) was using this interdental brush handle by Oral B , I put it down the receiver until I reached the pip and then I cleaned the pip, some dirt came out ( but I wanted to make sure so I took it apart all the same)
To make sure I dismounted the entire octave mechanism ( not without swearing a bit)
Another thing I had done before ( and maybe I should have simply stopped there) was using this interdental brush handle by Oral B , I put it down the receiver until I reached the pip and then I cleaned the pip, some dirt came out ( but I wanted to make sure so I took it apart all the same)