Assembly of Ikea Faktum tall cabinet for oven with 2 drawers

Good morning,
I am having difficulties assembling the 2 drawers of the Faktum tall cabinet.
I have assembled everything according to the instructions and now there is a gap of about 1.5cm between the 2 drawers. Unfortunately, this cannot be compensated for with the adjusting screws.
What can I do?
Best regards

Hello,

please check whether
1. the carcass rails are attached with the correct holes in the correct holes and
2. whether the drawer with the 31 cm high front is installed at the bottom and the one with the 26 cm front at the top.

I think that the rails were not in the correct holes...

Seems to have resolved itself...