I did a Mini-Me, D16A6 block D16Z6 head, on my 1991 Si and I re-used the metal composate headgasket. I devolped a small oil leak probably because its a used headgasket. I was going to replace the headgasket anyway. My question is what is better to put back in it? A D16A6 metal composate headgasket or a D16Z6 3 layer metal headgasket. My understanding is a metal composate gasket will fill in micro-inperfections better.