I have the STL's and have like 5-10 rough railing days on them, and they're holding up fantastic, and last season I was on a pair of 180 MSP's and they held up 1 season with railing, like 70 days on snow and rails, and I didnt get one crach, not one. So saying that 4FRNT edges sucks is equal to pooping on your leg and say that it feels awesome.
What you can do:
Email 4FRNT, you probably got a defect pair, plus your got them from Getboards, which I've heard gets defected skis etc so just send a mail and see what happens.
Good luck nigga...