Properly installing the Ikea Besta Tofta sliding door

Hello! Who can help? I am in the process of installing two sliding doors with 3 rails of 1.20 m each. Unfortunately, it’s not working quite right. It looks like there are two problems that I can’t get under control. On the one hand, there is a snag at the transition from one rail to the other, or at the plastic transition piece. Regardless of that, one door runs "smoothly." The other squeaks and scrapes. I have been pondering and trying for hours...! But I’m not getting anywhere. Does anyone know the issue or the solution to the puzzle? That would be great! Thanks in advance!

Hello,

I have a similar problem:
Installed a rail 180 cm long ... with two sliding doors ...
unfortunately, they don't really slide
more like ... with gentle force and four hands moving squeakingly, scraping ...

Who can help or give us a tip?

Thanks

Hello, try to proceed analytically. Where is it slipping? Top, bottom? Too much pressure or tension? Does it rub somewhere on the side? Theoretical sources of error that come to mind immediately are: - Body not mounted correctly, top and/or bottom panels do not fully rest against the side walls. - Doors not properly inserted, rollers do not run where they should. - Gliders not properly mounted at the top. - Rails mounted incorrectly. Suitable photos could help.

Check if the surface of the roller is really parallel to the door surface, or if you somehow managed to screw the roller's screw in crookedly.

Hello Ikea expert,

thank you very much for your good idea ...

We looked at the rollers again very closely ...
and found that the screws could not be the right ones ...
the countersunk screws were too big and therefore could not be screwed in far enough ...

Went to Ikea and got new screws and tried it out at home right away.
And lo and behold ... it runs almost smoothly ...

Thank you.