Thank you for your response. I can see what is going on with the axes controls although it isn't explaining why on the prop controls (or mixture when using say the baron) left lever is interfering with the right but the right is not interfering with the left since both are calling the same control command. Here is a snippet of the log with the controls being called. PFC
 
	   113110 ***  AXIS: Cntrl= 66292 (0x000102f4), Param= 15360 (0x00003c00) AXIS_MIXTURE_SET (These are set at Condition 1 and Condition 2 in the PFC options) 
	   113110 ***  AXIS: Cntrl= 66292 (0x000102f4), Param= 15799 (0x00003db7) AXIS_MIXTURE_SET 
	   113110 ***  AXIS: Cntrl= 66292 (0x000102f4), Param= 16384 (0x00004000) AXIS_MIXTURE_SET 
	   116782 ***  AXIS: Cntrl= 66292 (0x000102f4), Param= 15945 (0x00003e49) AXIS_MIXTURE_SET
 
	   127844 ***  AXIS: Cntrl= 65820 (0x0001011c), Param= 410 (0x0000019a) THROTTLE1_SET (These are set as ThrottleR1 and ThrottleR2 in the PFC options) 
	   127907 ***  AXIS: Cntrl= 65820 (0x0001011c), Param= 0 (0x00000000) THROTTLE1_SET 
	   128969 ***  AXIS: Cntrl= 65821 (0x0001011d), Param= -98 (0xffffff9e) THROTTLE2_SET 
	   129125 ***  AXIS: Cntrl= 65821 (0x0001011d), Param= -197 (0xffffff3b) THROTTLE2_SET
 
	   131563 ***  AXIS: Cntrl= 66291 (0x000102f3), Param= 455 (0x000001c7) AXIS_PROPELLER_SET (These are set as PropPitchR1 and PropPitchR2 PFC options) 
	   131594 ***  AXIS: Cntrl= 66291 (0x000102f3), Param= 1365 (0x00000555) AXIS_PROPELLER_SET 
	   131594 ***  AXIS: Cntrl= 66291 (0x000102f3), Param= 2276 (0x000008e4) AXIS_PROPELLER_SET 
	   131672 ***  AXIS: Cntrl= 66291 (0x000102f3), Param= 3186 (0x00000c72) AXIS_PROPELLER_SET
 
	The serial port PFC device is not recognised by MSFS and neither is it recognised by windows as a game controller. The Axes controls and buttons are recognised by FSUIPC which means I can use the FSUIPC config options rather than the PFC drivers.
 
 
	This will be useful for the condition levers in King Air will try set this up when the beta version comes out.