So.. I got the new router spindle from Grønvold maskin. It arrived from Bosch to the store yesterday and I picked it up today.
I got to the workshop and realised that they had sent me an 6mm router spindle. My custom router bit has a 8 mm shaft. As you can see in the picture it is a decent amount of nope, that wont work. So no I have to order a 8mm router spindle. *Sigh*.