Yellow Acro ID?

[skinz78]

I received this guy in a trade, I never got an ID on it. It's a slow grower, any idea's on what it could be?

 

[Frick]

It looks like it is got some weird growth going on. So hard to say. Some of the tips look like Acropora granulosa.
Acropora granulosa. Corals of the World - Photos, maps and information about corals and reefs