Hey guys, simple issue here but I want to be cautious and get things spot on...

I have a set of Tyga 'Hi Flo' reeds here. I have taken the old ones out and removed the old gasket. My issue is with the reinstallation process.

What way should the new gasket be oriented? I.e. should the green side (with the black ridges) be facing down and against the cases, or up against the valve holder body?

Secondly, should I use an oil or grease when reassembling, or should I fit dry? I don't want to wing it and risk a leak.

Opinions?