I have a screamer and a blue neon pro and both are getting little cracks on the fins, very slight cracks but not so you could rarve at the fin and it break off,

At which point are you allowed to request new ones? when it starts clicking and clattering?

Its just I ordered some new parts for my Metal only a few days ago, and am wondering how long before you are allowed to request new parts?
Its just iv read other threads and some users go through them like wildfire.

I have a brand new orange 250hz pro to play with at the moment though, so no rush.