I'm a longtime laser op myself, my family has run a shop in SoCal since '92. Back in '06 I made a set (base, head and crankcase] gaskets out of .032" copper, they worked out really well.
Totally overkill, but held a seal perfect. Stuff like head and carb gaskets on an HT don't need to be special, you can make one out of a Pepsi or beer can tho lol!