Actually it was not difficult at all, but i (felt i) had the need to know if the pin was broken, so i took it out - it was not!
As luck have it, i have a 5mm mandrel i use for the brake pins, it fit exactly inside the thread, so i didn't need to put in a M6 screw (probably the cheapest and most useful tool i have bought so far). Just enough space for little nudges with my smallest hammer, and when the pin was almost in, i used the hammer as a lever and got the pin 2mm's extra in.
I actually asked my local MB shop, and they said "we just use a hammer".
As a Danish saying goes : In the land of hindsight, we shall all