thanks for the info and picked one up today
(Drove 80 miles to get one though.)
10 minute job in the end and just left wondering why I put it off for so long
And yes the teleflex site seemed short on info.
Gave the part number ,but no online sale or further links.
Several online boating sites had them,but the postage was more than the part!
Also needed it fixed for a shoot this weekend and regular UPS said 5-7 days.
( 2day air was about $50 ) !! and could take 4-5 days with handling
So just topped up and bled the system / wiped it all down and will check for leaks later on.
Hopefully none !
Thanks for all the help