master cylinder rebuild kits

[adriangsmith]

Hi All,
I have a bit of a problem.
My CB750 is a bit of a mix of parts from an F1 and F2.
I need rebuild kits for both master cylinders but don't know which ones to buy.
Can i identify from the markings on the master cylinders?
Front one is marked        3 C 2 11/16
Rear one is marked         14 (theta symbol)

I've seen several different kits listed for the years and unsure what differences there may be.
Also is there anywhere else apart from DSS that stocks these in the UK at a reasonable price?
Thanks in advance

Adrian

[Spitfire]

Hi there, the F1 and F2 master cylinders are different, below is F1 rear MC

and here is the front


Cheers

Dennis