Load the RPM profile on one device, and Co-Pilot on every other LED device you own.

The reason is that the RPM profile's layout settings, in particular the number of side LEDs, are shared by every RPM profile on the rig. Two RPM profiles on two differently shaped devices therefore read the same numbers and one of them ends up drawing in the wrong place.

Co-Pilot exists for exactly this. It has its own page at Daniel Newman Racing > Co-Pilot LEDs, with its own:

• Start position, which should be the first LED of the centre segment of that device's RPM bar, ignoring any side clusters
• Number of LEDs used in the centre portion
• Brake, Fuel, Idle Mode and Effects tabs, configured independently

So a DDU can run the full RPM profile while a wheel rim, an eyebrow strip or a second bar runs Co-Pilot alongside it, and neither competes with the other.

A few settings are shared on purpose and say so on screen, such as the brake blink stages, which read "Share the same value in Telemetry Tab".