Actually, this can be a big problem, and is due to more recent years changing manufacturing locations to less quality controlled places.( guess where)
This can cause your lead the break very easily when pressure is applied, and also not sharpen correctly. The leads will have less resistance on the side that has less wood casing. They also break very easily inside th casing if dropped and sometime the leads will actually start to slip out of the casing. if you go to some of the colors pencil forum sites, you will see discussion on how this has become a big issue recently. Many pros will not use the brands that have lowered thier standards like this, as it is occurring more and more frequently. I personally, would return them and let them know why you are not happy, as allowing it to continue, will totally allow quality to slip in all directions.
I think there are a couple you tube videos discussing this as well.look for comparision of prismacolor vs Faber Castel, i think you will find one that goes in depth on the issue
One brand that is consistantly excellant (so far) is Faber Castel. They are more expensive, but quality is right on and still there.
Good luck with your drawing.
Last edited by Kalanu; 06-07-2016 at 10:43 PM.