Revert 8eeff54..d085a82

This rolls back to commit 8eeff541bb66516035f072381beeafa2feb125c5.
Revert a0d4258..7e019de

This rolls back to commit a0d4258fbe994647733f0c25845a2e4d00447b63.
Revert d085a82..6244a24

This rolls back to commit d085a8260f0ccfe1583e384338bf1789251248bb.
Revert 8eeff54..57645d3

This rolls back to commit 8eeff541bb66516035f072381beeafa2feb125c5.
Revert d085a82..da7bc54

This rolls back to commit d085a8260f0ccfe1583e384338bf1789251248bb.
Attempting 3 - Checking problem

Some points weird in the XYZ spec