Securing kitchen cupboard drawer to tray

[Longshanks]

Hi

We had a Magnet kitchen put in about five years ago. We’ve always had a problem with the cupboard, where front is attached to tray by plastic screws. (Photos attached) Whenever I retighten the screw, it’s secure for about five minutes then cones off.

I’m positing in groove and tightening as much as I can with a screwdriver, but no cigar. It’s evident that the wheel things on the side may not be correctly adjusted, as cupboard front isn’t straight. However, not sure if that would affect our problem.

Magnet are useless, so any wisdom much appreciated.

Thanks for your time

 

[Longshanks]

Hi again

Just taken another look. It seems that the plastic recess on the unit attaching tray to drawer front has worn. I don’t particularly want to buy replacement (whole unit?) from Magnet, so wondering if there is anything I can put in recess to secure screw to?

Cheers