Unable to filter single model in classifieds from brand

[Krikkit]

Hi,

Just doing some idle browsing of the classifieds, I followed a link in an article through to an individual car: https://www.pistonheads.com/buy/listing/10243294

Then followed the brand link to this page to browse all models: https://www.pistonheads.com/buy/rolls-royce

Then clicked on "Refine your search": https://www.pistonheads.com/classifieds?Category=u...

From here I'm now stuck - on the grid in the left of the page there's a list of models (all selected), but I can't narrow it down to a single model with an "only" option. The only choices are to look at everything, or to remove the brand filter, re-add it and go through the models from there.



Not the end of the world for a Rolls, but let's say I was browsing Audi or BMW, suddenly it's impossible.