Cheers @Grant, the thread has got way off track. You are so correct. It does seem to be a north/south thing, and yes it also seems plastic are more prone to bridging than wooden frames.yes, twice
so I'm not entirely sure where the backtracking has come from,
The only thing I can think of is that Rob sees it as a north/south divide, rather than an extractor plant divide, but this hasn't come across clearly in other posts.
However, by everyone's admission, there is clearly a difference somewhere. Whether it's by the plant or by the regions it happens, and it maybe funny, odd or whatever else, but I don't see the need for the defensive attitudes. It's a thing, get over it.
Now the let's revisit the bottom line.
So I think there lies the answer really. Plastic frames.
Thanks for your mediation input