Be sure to get good quality Euro screws. The ones that came with my kitchen packs were very poor quality. The head circumference wasn't constant with the result that some were too small for the holes in the slides.
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Apologies if you already knew this....
If you look on the head of the Euro screw there's some lines embossed diagonally through the screwdriver slots. These indicate that the head requires a Pozi-drive screwdriver rather than a Philips-head. They're not interchangeable and using the wrong one tends to chew out the head.
Mick