Brake doseur leaking again

[Jaf]

I replaced the seal etc just over 2 years ago. 'Tis leaking again. Other than looking for swarf or nicks anything I can be aware of? I can't actually remember changing it so hopefully it'll be straightforward.

Thanks.

[Jaf]

Well, not good. Took the Doseur off, seal looks fine but changed it anyway. So must have a leak somewhere else. Unfortunately I managed somehow to break one of the rubber LHM pipes, looks like I can trim it and glue it back on over the plastic insert. You can see a repair a garage did to another bit of pipe, shown just above the hand. Will then put her back together and try and find the leak. Sigh.