Cometec gaskets, any special install tricks?

I spray every head gasket with permatex copper.

My wife had an old 2.2 K-car before we were married.
Blew a head gasket between 2 & 3 cylinder, no fluid loss.

Tore it apart the head was warped, .030. in the center
Me and her were just divorced, broke as church mice.
I borrowed 20 bucks off my dad threw it back together.
Gave the car to a relative a year later and he drove it for a couple of years, and then gave it to another relative.

$20 head gasket $5 copper spray kept an old much needed car at the time on the road.