Diaphragm clutch and free play

Yeah that looks home made. The factory ones that have seen are stampings. I'm not knocking homemade, I mean that's what HotRodding is.
Furthemore swapping out that bracket to a shorter one will move the fork rearwards and you might run out of window back there, when the clutch pedal is pushed down. Whereas a taller pedestal will move the fork forward harder into the header.
I'm starting to think yur out of options with the fork business, and the only other option is to move the header.
Hang on I just thought of something; those stamped pedestals have a very narrow bearing surface compared to that angle-iron. Maybe install that thing into the fork clip, and see if that all works correctly. Another thing that irks me is if the slot is in the wrong place vertically, that would force the fork into an unnatural position and unknown arc of travel.
FP680; no dimensions given
FP680.jpg