Peter,
Apologies for not responding earlier, I have been away from my PC, and did not have the chance to implement your suggestions.
I now have the issue fixed, and I thank you for your help and assistance.
However for me the solution was slightly different (from my understanding of the instructions at least) and I post them here in order to help anyone struggling.
I followed your suggestions (as I actually did in the previous post on the subject ;) ) but to no avail. Frustrated I even tried removing FSUIPC to see if that made a difference. To my surprise it did not. Even when mapped entirely through FSX I could not get a throttle response from the Wilco Airbus.
So as you see for whatever reason, simply unasigning the controls from FSUIPC had no effect. However as you rightly pointed out the issue was not with FSUIPC but rather the Wilco Airbus.
I played around further and found that by setting a control axis from the TQ to each individual engine I could get a response using the FSX contols menu.. That discovered I reinstalled FSUIPC and assigned the Throttle axis I wanted to use (just one control) via the Axis assignments followed by your suggested settings.
It works perfectly.
Why for whatever reason the Wilco Airbus ignores single throttle inputs assigned to mutiple throttles on my setup , I have no Idea. I trawled everywhere for any conflicts, nothing, perhaps just a peculiartiy with my system.
In anycase for me it was the issue that had stumped me, despite trying out all your reccomendations in this post and prior.
Thanks again for helping me get there, and like I say its just a heads up to others who may experiance the same problem