My 4700 has the 3 spool valve stock. So I know there used to be a kit that is now out of stock or EOL or something.
What exactly is required if I want to add in the 3rd scv to the FEL so I can use my Grapple?
I understand that there are steel hoses in the kit - could one use flexible hose instead?
Is the actual 3rd spool present in the existing valve body?
(I did look through a few pages of search results and interesting reading, but there are like 300 pages of results for '3rd SCV' )