I should probably ask the admins to delete this advert, because after some feedback, I've learned that the condenser is not the problem, it's the lens attachment board.
The problem was that I could not focus with the 50mm lens, I was assuming that the condenser was the causing it.
After some feedback, I learned that I actually need a lens board that will put my 50mm closer to the negative.
And after that feedback, I had a brain fart and a spew of inspiration, so I made a lens board from the bottom of a writable cd-rom spindle (usually black with an axis on it where the cd's are put trough).
I made a hole which the lens would snuggly fit trough and then adjusted the outer dimensions so that I could attach it to the enlarger and lo and behold, I am able to focus now =)
I have ordered a lens board from Durst. The board cost 15, while the shipping cost 40 (yes), but it is on it's way and I will use the DIY-board I made until i receive the proper one. (eBay came up empty).