Inliners International Forums General Discussion Engines 292 Oil Pressure relief valve

I was pressure washing my block yesterday and I think I damaged the oil pressure relief valve. I'm not sure though.

It looks like a press fit piece with a spring and there's a diaphram below the spring. In the pictures in Santucci's book, it appears that the fiber diaphram piece is supposed to be on top of the spring closer to the oil filter than the oil passage. Which way is right?

Also, I have not be able to find a replacement valve in the event that mine is damaged. Is there a source? I have noticed that in Santucci's book he says it could be drilled and tapped for a plug... is there a benefit to that for long term street use?

Thanks