Rebuilding 200 ci six and the supplied Fel-Pro head gasket (from set #FS 7916 PT-2) has irregularly shaped cylinder rings. They're not round, in fact some areas spread outward similar to some gaskets allowing for valves areas, but not all ring shapes are consistent. Brings into question effect on compression. Has anyone seen this before? Is this typical? No sign of damage or mfg. defect. Thanks in advance any comments or advice.