Stable mount for bike navigation with the Galaxy Nexus

Very stable holder for my Galaxy Nexus, which could now prove already on the first major tour. The assembly I could understand without problems. Quality default - was already clear to me because of the price - it's just a huge piece of plastic, although I have emotionally it not great fault with.
But why then only 4 stars? When driving on non-paved roads (dirt roads, gravel, etc.) or in streets, who know the potholes not only from the media, you can still hear a slight clunk / vibrations from the holder. Furthermore, I always have the problems the bike mount optimal (ie, that it is properly secured) on my Samsung Galaxy Nexus adapt. To this end, for me it always requires the lateral claws properly adjust several attempts right and left. Possibly I have this but not yet the proper technique found ...

But I am - except for the above-mentioned little things - very pleased with the product. :-)