Originally Posted by RXBOT
I think you should ask a professional for an opinion. As far as I know rod rigging may last indefinetly. Rod rigging is more expensive to begin with, perhaps thats why it can have a long life.
My understanding is that rod rigging is less reliable, and tends to catastrophic failure; wire line generally lets you know beforehand.
I would be wary of sealing fittings; sealed ss is liable for crevice corrosion when deprived of 02; I'm surprised the manufacturer suggests this.
I would suspect that wire rusting after 18 month exposure might not be very good quality; simple exposure shouldn't rust high quality ss.