Oil leak near prop governor

[Gord Tessier]

Any one seen this before. Noticed oil (more than usual) on rear cowl co pilots side. There seems to be a lot of oil around the prop gov and in the hole next to the wiring thingee that comes out if it. There is only one gasket between the gov and engine flange, just wondering if this is correct as I have heard that some use a metal spacer. Any thoughts?