Just got some 7x7 3/32 SS rope from Amazon.
Loos Stainless Steel 302/304 Wire Rope, Military Specification, Lubricated, 7x7 Strand Core, 3/32" Bare OD, 25' Length, 920 lbs Breaking Strength: Amazon.com: Industrial & Scientific
Have some up and running in my RSST and it vapes like a dream with...