Go

[MitchM]

I wouldn't handle it too much if I were you. The tissue can regrow, but you need excellent water and lighting conditions.
There is a protozoan that loves decaying LPS tissue, and you will know that you have it if you see a brown or white "jelly" forming at the edges of the coral. The infection can be beaten with a diluted iodine dip.

Good luck.

Mitch