OK,my legacy axle is bent due to extream play and i got a new axle but i dont know how to take the old one out.can some help me out plz.thx. yo-bear
Just grab it with pliers or vice grips. then unscrew as normal. If the hex head is showing then you can use an allen wrench to take it out.
I BEAT SAMAD TO THIS ONE!!! 
Sometimes when u get a new axle it doesn’t go in all the way 4 some reason, but if it doesn’t make sure that u r screwing the other side of the yoyo together correctly or else the axle will snap nd b forever incased in the sides
What he means is don’t cross thread the new axle. It will go in easily till it hits the locking part of the brass insert. Then it will get tighter just like normal.