Now when my favourite fly rod is broken I have tried out my other rods with different lines. To my surprise some strange combinations work to some extent at least.
Maybe the biggest surprise is my old 8 weight rod. This 8'6" rod casts 7 weight DT line very well, but this is natural as you might even call it 7/8 weight rod. However I was able to cast some 20-23 meter casts with this rod using 5 weight Rio WindCutter line. It didn't shoot that well but I was able to keep most of the line in the air before final forward cast. It did require lot of double hauling thou.