Reckon he'll be entitled to a replacement? I don't know much about these things. He got it on finance from some music shop in Salford (the one that used to be sound control).... I know cymbals split, but they're £100+, so they should have a bit more life in them than 4 months!
He's checking tomorrow, but I just thought I'd ask the esteemed people of DiS out of curiosity