Gain tuner tutorial - many cobotta joints' gains are not being tuned

Followed this tutorial on Isaac Sim 4.0.0-

Adding a New Manipulator — Omniverse IsaacSim latest documentation (nvidia.com)

In the select articulation dropdown I see /cobotta_pro_900/root_joint

When I tune the gains using the sinosoidal gains test, Joints 2,3,4, and 5 are not being tuned. I need help with figuring out why this is happening.

Best,
Manu

These are the test results. The tuning is done by selecting Set Stiff Gains. Other joints are being tuned properly.

The URDF to USD extension possibly has a bug. The generated USD file is smaller than the one present in the cobatta assets here Configuring RMPflow for a New Manipulator — Omniverse IsaacSim latest documentation (nvidia.com)