It appears that our pull out kitchen fauce is leaking. I thought it was last fall, but wasn't sure until I dewinterized the 5er yesterday and ran copious amounts of water through it - yep, it is. Usually it is only a couple O rings around the cartridge, but what OEMs use on an RV ........... not always good stuff.
Question - no clue what brand, but it seems to be a pretty decent one - are there a repair 'kits' available, i.e. at a Big Box Store. This is a poor photo cropped from a bigger one but will give you an idea of what it looks like:
If no kit - will probably just replace it, $$$$