Does not fit into any socket

Due to the numerous positven reviews I decided for the Mengs LED lamps.
Dimensions and brightness make this product at a reasonable substitute for appropriate 30W halogen products.
Problems arose when inserted into the base of the lamp.
The Mengs LED lamps fit into the socket only when I had about 1mm filed by the electrical contacts at the side with the metal file.
The pitch of the electrical contacts on the LED bulbs as required 9mm (why G9), but the contacts are now manufactured -entgegen the Produktdarstellung- not of a bent wire instead of a flat material (see picture).
The outer distance between the contacts is 13.5 mm, the old halogen bulbs there had 12.5 mm.