I notice that the "clumpiness" varies bean to bean, proabably due to moisture/oil content and how fine they need to be ground for a decent brew.
The bean I'm currently using barely clumps at all. Others I've used have clumped a little more. Not really a big issue as any clumps collapse very readily when tamped or even lightly touched.
Check the link below also.
Compak K3 Touch and Elite Details