Filament diameter variation

Hi, I noticed the filament diameter seems to vary more than usual on this particular hips roll.

Is this normal and should I print with it?

It got stuck at first when I tried to feed the filament in the feeding gear....!

It shouldn't happen. Give us a shout through www.support.zortrax.com/support-form and we will replace faulty spool(s)

Done, thanks!