Hi!

I'm a new user, I've spent years learning stuff from other peoples posts, but can't seem to find anyone who's had my specific problem, so decided to do my first forum post.
I wonder if anyone can help. I recently bought a 23.5" 80's Raleigh Classic, complete 531 frame and forks as I decided my 25" Carlton was too big for me. The Classic came without brake cables, so I bought what I was reassured were jagwire cables and housing from ebay. After using for only a week, both the front and rear cables have begun to show signs of friction - when I brake, they make a horrible grinding noise and are hard to pull, and sometimes don't return fully.
The problem is definitely in the cables rather than the brakes themselves, which are Weinemann centre pull.
I didn't grease the cables when I put them in, as I had read that modern housing does not require it.
Has anyone encountered similar problems?
Is it possible that I have just been sold trash instead of real jagwires?

Cheers!