Yikes Retro!
Steering bearings seem in good shape - smooth, no freakiness, I need to check the front wheel bearings - no time this weekend. No cupping or uneven wear on the tire.
Gene
The "notchiness" is sometimes not evident till you remove brake, clutch, choke cables and wiring harness from the equation.
I'm in the process of installing the all balls in my K8 now, and couldn't detect any notch with the front wheel jacked up. But since I already had the set, and needed a new front tire, I decided to go ahead and install them anyway at the same time.
After removing the cables, harness and fork tubes, etc, the bare trees would home into the notch at the straight ahead position and take quite a bit of effort to get out of that position.
The races confirmed the notch @ center.