| Sorry to hear your troubles Z.
The stickyness at 28mm from my understanding is sealled double cam action at work.
As the lens starts to extend the second portion of the zoom it has to fight the weather seal to move it.
Contact the distributor to verify this... stand on your rights that you did not drop the lens.
I'm not sure of consumer laws in Belgium but try to find other examples from the net and show them that the screw that came loose or the part broken can happen without dropping.
In all likely hood then just want to use it as an excuse to not honour the warranty.
Hope it goes well for you.
Cheers
Shang |