On Sat, 28 Mar 2020 22:24:25 +0000, John Rumm
wrote:

On 28/03/2020 18:05, T i m wrote:
On Sat, 28 Mar 2020 16:15:40 +0000, John Rumm
wrote:

snip

I have found when they get old the internal rubber flaps that cover the
inside of the filters can curl a bit at the edges.

Could that just be down to age or if some lube gets on them by
mistake? ;-)

Well in heavy use the interior of the tends to get pretty wet!

weg

Cheers, T i m