I've had it with my SE-i prop valve always leaking. I've tried resealing it and tightening and over-tightening the flare nut fittings. Nothing works. I can't see anything obvious that would prevent a good seal, so I guess it's just old and needing replacement. I'd like to buy a new one, but those are hard to find. Does anyone know if a prop valve from a newer Accord would work? I know the 4g prop valve looks exactly the same. Wonder if I could use it instead.