I have a Grohe concealed cistern, it stopped flushing and so I replaced the bellow in the button flush. But it doesn't give enough air pressure to make it flush. The only way to make it slush is to use a 50 ml syringe (at full draw back) on the tube. It's about 19 years old now and I would have to rip out a wooden wall to get to the cistern (someone's daft idea not to put in access). Any ideas anyone? Thanks.

Linda, October 2022

I replied earlier, saying if the only way tonaccess the cistern, apart from the button that you've already tried, it looks like you'll need to get to the cistern itself.

If there's anything good that does come of the exercise it'll be that you'll be able to rebuild the build-in with future maintenance - and emergencies - in mind.

Ffghh, October 2022