Class product, does not fit into any wall outlet

Since I in the past a lot of negative experiences (eg remains hanging on the vacuum cleaner plug), with socket protection to be fixed with double-sided tape, did, I was delighted when I learned of the screws variant. Unfortunately it was not possible to assemble these into the existing socket GIRA System. Screw the socket is too short to the Steckdosenschutz securely connect to the power outlet.
Would have been nice if the company REER had settled or longer screws would provide optional.
Now I look for suitable screws. Or do I replace all sockets.

Apart from that, the model is processed properly, jumping the spring during assembly ever get out is not so tragic. Can be easily put back together.