So the clutch push rod was filled with weld and a new 8mm hole drilled into it.
The hole was set nearer to the end than normal to push the clutch actuator lever away as much as possible. I might have overdone it, as it was a bit tight getting it to fit.
Engine started and warmed up, I got in, engaged gear, let out the clutch and away we went.
Wahoo!!
About 3 feet later I applied the brake and not a lot happened.
Next job then, bleed the brakes.
Again...