Apexi exhaust manifold cracked
 

As I was putting my motor back toether I noticed that my Apexi exhaust manifold was cracking around the welds after only 30k miles. Is this a common problem with aftermarket manifolds? I'm going to try and get this welded but if it doesn't hold I'll be looking for another manifold. Are exhaust manifolds interchangable between turbos or do I have to buy another Apexi manifold. If not, does anybody recomment one manifold over another?
Thanks!!!