cosworth head and gasket thickness

[alinomie]

I've had my cosworth yb 2wd head skimmed but it is now .3mm below the 138.68mm ford recommendations.
Will I be okay with a standard groupA gasket? Or Is there a thicker fibre gasket available to make up the difference? I don't want the hassle of removing block to skim face for a multilayer wrc item.

Head was removed due to bent valves, not sure if engine jumped timing or was over rev'd a tad.

What's my best option?

[Erikmex]

I've had my cosworth yb 2wd head skimmed but it is now .3mm below the 138.68mm ford recommendations.
Will I be okay with a standard groupA gasket? Or Is there a thicker fibre gasket available to make up the difference? I don't want the hassle of removing block to skim face for a multilayer wrc item.

Head was removed due to bent valves, not sure if engine jumped timing or was over rev'd a tad.

What's my best option?

Cometic will make a gasket any thickness you like