I'm hoping some informed soul may be able to kindly point me in the right direction. - Ideal Standards toilet, though there is no obvious indication of specific model number. Photo included, if it helps. - Upper part of flush mechanism has sheared off, per photos. To my untrained eye, what I ideally need is a replacement of the series of parts in the 4th photo, i.e. from the screw thread upwards. The piece which has the screw thread has sheared off from the piece which sits on top of the cistern lid, seen in the 1st photo. The rest of it, i.e. everything seen in the 3rd photo, is still in tact. If this part is no longer available then whatever solution I go with would presumably need to accommodate the cistern lid sitting in between the flush "button" and the gubbins beneath it. I've looked on Amazon and eBay with no success. Might somebody be able to point me towards a source for this part, or perhaps even just educate me as to what the technical term is for what I need so I can ring round plumbers' merchants?