I got a replacement fork for my new road bike because it had a deep scratch in the steerer tube and the manufacturer adviced to exchange it. Today I got the replacement fork and just wanted to install it. Somehow I can't fully fit the fork into the steerer tube so the integrated crown race fully attaches to the bearing. I'm sure that I didn't forgot a part and am also pretty sure that I don't have to hammer it in there. Is there the slight possibility the diameter of the crown race could be different? There's a sticker on the fork and on the old one it said 5/29. On the new one it's 1/18. I'm honestly confused.
Edit: Tried to remove the lower bearing to slip it on the fork. But unfortunately the manufacturer uses an Acros aheadset where the bearings can't be removed and are not serviceable.