@RobinBrown0947 Reviewing the recording, I can see consistent seating in the checked fixture before pickup. The workpiece changes angle during gripping rather than arriving in that position.

Preserve the current settings and pause further nudges. Have maintenance inspect finger mounting, contact surfaces and tray seating under the proper isolation procedure, using that observation to guide the checks.

@RobinBrown0947 The maintenance notes show contact pads were replaced before the first point adjustment. That's the first useful clue I've found in the history.

@KaiChen1150 That sounds like the pad replacement caused it. Check the installation against the specified arrangement.

Timing isn't enough to call it the cause. Check the pads, yes, but don't let one maintenance entry explain away fixture variation.

Agreed, I called it too early. Treat the replacement as a lead; verify installation and contact condition alongside tray location before assigning the cause.

@RobinBrown0947 On my own setup, we found worn contact surfaces and inconsistent tray seating together. Fixing only the pickup point made the symptoms move around.

@MeiBaker0516 With multiple point changes already in our history, I'm unsure how to distinguish tooling and tray effects. How did you structure that comparison on your setup?

For my setup, a documented reference configuration anchored the investigation while maintenance assessed individual conditions. Discovering wear didn't mean we automatically restored older pickup coordinates.

Why not just go back to the original points once the gripper's checked? Aren't those the good ones?

Only if they match the verified setup. Tooling, frames or presentation may have changed; your responsible technician should compare the configuration before any supervised validation.

@RobinBrown0947 The relationship between the initial points and the present setup hasn't been verified. I'm retaining the current configuration instead of assuming the original positions would restore a known condition.

Good. Also, 'tray looks the same' isn't a seating measurement. Your pre-contact observation helps, but it doesn't cover every tray replacement.

@ReeceArcher0384 Our supervised comparison has identified variation in tray seating and wear on the contact surfaces. That gives us two observed conditions to address in the investigation.

Would you clean the pads or replace them? I can't tell where routine cleaning stops being enough.

@AmaraBarnes0600 Use the tool maker's maintenance criteria and a qualified inspection. Appearance alone won't tell you whether cleaning restores an acceptable contact surface.

For my own tooling, photographs attached to the maintenance history made condition changes easier to compare. They provided a more useful reference than recollections about how the grip once looked.

@MeiBaker0516 The pre-contact and gripping observations have narrowed where the symptom develops. We haven't established an accepted remedy, so I'm holding further coordinate adjustments during the investigation.

You've located when the symptom appears, even though the remedy is still open.