The detachable housing wasn’t engaging…
The detachable housing wasn’t engaging the swan neck lowball the fitter said he would bring a new one out when he came he didn’t bring one ,he put the lowball on and said it’s best to keep it on !!!! ,I have since taken it to another supplier and he changed the adapter it’s now working perfectly I can take it off and put it on …. Not leave it on permanently.It cost me more money to resolve this issue so not happy with the fitter and will not rec🤬🤬