After comparing the outlines, I found that the proposed approach overlaps the door handle even though the workpiece itself clears. That explains the misleadingly comfortable result in my initial sketch.

@VictorBaker0446 Use that measured layout to review the complete approach and retreat offline. Include the tool, cables and service access, then ask the integrator to assess a revised mounting arrangement.

@EmmaArcher0376 The buyer has suggested choosing a larger arm. I'm unsure whether that would address the access issue or simply increase our purchase while leaving the obstruction unresolved.

@VictorBaker0446 A larger arm should give you more mounting freedom, so that could be the easiest route to investigate.

@EmmaArcher0376 A different arm geometry may introduce its own clearance problems. Increasing reach doesn't establish that the proposed tool can pass the existing handle obstruction.

You're right; more mounting freedom isn't guaranteed. Check each candidate in the measured layout and only favour a larger arm if its full approach works better.

Identifying the handle obstruction has helped, but we still need an assessed layout that addresses it. We're keeping the arm under consideration without making a purchase decision.

Having a specific access issue to resolve is progress; it doesn't require choosing the arm yet.