Try flipping the push rod to the other side of the Z bar arm. It may or may not start to rub again, but it will allow you to get to work.
Not sure how yours is currently situated, but you may get lucky because by moving the push rod to the other side of the Z bar arm it also angles it in the opposite direction.
I had a clearance issue on my 66, and instead of doing something as drastic as bending the Z bar, I just flipped the push rod to the engine side.
I think since you had already altered your Z bar, it (push rod) 'probably will not line up with your fork.
If you find it doesn't work, it may be time to get creative.
Maybe a chunk of aluminum bolted to the Z bar (drill and thread a hole), then drill a hole that will receive and offset the threaded portion of the push rod.
...just one quick idea off the top of my head.