Gentlemen

As I get ready to replace my 560 SL head gasket, I am reading some articles that say helicoiling the threads is almost mandetory. Can anyone share there experiances with this.

I'm surprised that the block does not come with some kind of thread inserts from the factory.

Are there any trickes to this.

Are there any thin wall areas that I have to be concerned with.

Thank You
John Roncallo