Adjusting that white plastic deal on the bobbin winder won't affect how the bobbin winds, just how much thread winds onto the bobbin. The post that the thread coming off of the spool wraps around, before going to the bobbin winder, may have some adjustment to it, and usually the manual details what adjustments to make for even winding.
It may be an optical illusion, but it looks like the post that you put the bobbin on for winding is bent, and if it is, likely would cause the bobbin to not wind evenly.
Last edited by mlmack; 11-03-2014 at 02:56 PM.