Bed leveling gone wrong?

I've been happily printing small parts on a fresh Fisher delta. But now I tried a print with bigger footprint, and noticed the bed leveling is way off. The first layer height is set to 0.35mm, but what I'm getting is 0.5mm on the left and on the right the nozzle drags on the bed. I did a seven point calibration, which helped, but it's still bad.

The bed is reasonably flat. Rotating it made no difference. Any ideas?

Made progress on this, with 10 point auto calibration. Still needs fine tuning but already an order of magnitude better.

Try manual calibration! I've never auto-calibrated my delta and it works great.

The fisher auto calibration is great. I finally found the root cause of this, when one of the acrylic rods broke... I already got parts for carbon fiber rods.