VC gaskets: I think the ones I get are called fiberfab?? they are a combo of silicone and fibers, not unlike our bodies: resin plus glass fibers for strength. They work really well. Never liked nor had any great luck with cork back in the day. I stick 'em down with the aforementioned red HT silicone.
As to Danny's little wee springs, I think they are the bomb. If nothing else they make a profound statement about the owner/driver: "I pay attention."