Yes, call the service department for replacements. If you're damaging the recess, you're probably over-tightening them. The reason they're slotted is to prevent over-tightening.
Chances are your could find a M6 screw at your local hardware store if you're prefer a different recess. When you over-tighten it, I can give you the part numbers for new guide rails. [poke]
Chances are your could find a M6 screw at your local hardware store if you're prefer a different recess. When you over-tighten it, I can give you the part numbers for new guide rails. [poke]
Chances are your could find a M6 screw at your local hardware store if you're prefer a different recess. When you over-tighten it, I can give you the part numbers for new guide rails. [poke]