there is a little piece of curved metal to fits between the base of the arm snd the backing plate, I just installed a new one and it keeps falling out, when it does the door stop falls down on its own. 😡 ive put it back in two or three times but keeps falling out.
Thank you so much for your suggestions. Ur absolutely right and that's the best choice. But how can u procure a rubber bush of a 25 years old door stopper? Anyway thanks again for your suggestions. Best regards