We once had a replacement plate arrive before anyone had agreed who would update the setup sheet, and the shift kept working from the old drawing. Whatever remedy is proposed here needs the installed configuration and documentation considered together.

Arrival records name the arm only. I sent the two interfaces side by side and asked for the supplied adapter reference. Our installer has the fitting hold recorded.

Any technical answer yet, or another assurance from sales?

And leave dimensions for the responsible reviewer. A similar outline won't settle the locating interface.

Technical reply identifies an alternative adapter and proposes modifying our fixture to suit it. No cost or responsibility agreed. The suffix explanation is also incomplete.

Then you have a proposed change to evaluate, not the promised comparison completed. Ask them to offer supply of the confirmed arrangement as well; modifying your fixture would change what your team must own after delivery.

Does their modification proposal show the resulting tool position and all affected interfaces? A sketch of the extra holes alone would not tell the installer whether the original housing-loading setup still applies.

Please don't let the workshop treat that proposal as permission to drill the fixture.

It is only a hole-change sketch. I have declined fixture modification and requested the confirmed adapter plus a complete identification comparison. Nothing fitted or altered; their supply answer remains outstanding.