Replying to Edge cracks on On3ps

I’m gonna say this now, I absolutely love my magnuses (2017) to no end. I’m kinda surprised tho because I already have 7 big edge cracks, I picked up 5 this past weekend. Is this normal for on3ps or am I just that hard on rails? One thing I will add is that the serial number is below 40, so if this means it’s one of the first batches of magnuses made, is it just a factory blem? Is it normal? Am I too hard on rails? Another note: I’ve been skiing them since thanksgiving and have 30 days on them.