Attach the right outer rail of IKEA PAX Ånstad at a right angle

Hello everyone

I bought:
4 x item no. 202.145.71 Pax KK 75x58x236
2 x item no. 001.831.65 PAX ÅNSTAD STP 150x236 HGL

In a few hours, I assembled and set up the four PAX carcasses.
Now I wanted to screw/click the outer rail of PAX Ånstad onto one carcass, but as shown in the picture below, I CANNOT align it horizontally without applying external force. It always protrudes a bit. Is that normal?



The carcass already has the four holes from the manufacturer, in which I screwed in the screws with the click-closure shown below. I did not have to fully tighten the screws so that the rail still fits under the click-closure.



Actually, I can easily pull the rail down at the left and right edges. However, in the middle, I cannot pull it down well. I think the inner two walls prevent this.



I checked all 4 click-closures with a small mirror: they hold the rail in the correct place.

What can I do to make the rail stand at a right angle to the carcass?

Thank you very much!

Andreas

Simply change the order when assembling. First place the rail on top, then attach the middle click bracket from above and screw it tight. Then screw on the rest. Attention .... the running rail must be aligned exactly in the middle, otherwise it may happen that the drawers (if you have installed any) hit the door. That's how it works. The other way around ... meaning screwing on the click brackets first and then clicking in the running rail, does not work.