I've honestly never fraged an lps other than branching varieties of euphillia (I didn't even attempt to spell that correctly, I just woke up, and only went to bed 3 hours ago), and calustrea.
Right now it is almost perfectly round and has some gorwth coming out even with the bottom glass of the aquarium.
As soon as I get the cajones to bust out the chisel and hammer I'll let ya know
Oh yeah, and it is a favia, the white stripes on it are why I purchased it. Everyone thinks it is where the skeleton is poking out, but the flesh actually has little white stripes around the curcumfrence. The newer polyps don't have as developed looking stripes. When I bought it, there was a lot of silver/grey in the flesh also, I think my halides wash out a lot of that color and make it look more brown.
Mike