Aha! The Control Profiles are XML files:
<?xml version=“1.0” encoding=“UTF-8”?>
<Version Num=“1238”/>
<FriendlyName>2-axis,8button gamepad profile</FriendlyName>
<Device DeviceName=“2-axis,8button gamepad” GUID="{F07FAF30-E1C8-11EA-8001-444553540000}" ProductID=“8243”>
<Axes>
<Axis AxisName=“X” AxisSensitivy=“0” AxisDeadZone=“0”/>
<Axis AxisName=“Y” AxisSensitivy=“0” AxisDeadZone=“0”/>
</Axes>
<Context ContextName=“PLANE”>
<Action ActionName=“KEY_AXIS_ELEVATOR_SET” Flag=“4”>
<Primary>
<KEY Information="Joystick L-Axis Y ">1042</KEY>
</Primary>
</Action>
<Action ActionName=“KEY_AXIS_AILERONS_SET” Flag=“4”>
<Primary>
<KEY Information="Joystick L-Axis X ">1026</KEY>
</Primary>
</Action>
</Context>
</Device>
So, edit away!?..