Hi MartinGee,
we are the Airush dealer in Perth. From your description, It seems like you have a pre-2015 kite (separate 9mm inflation valve and 11mm deflation valve). We are unfortunately sold out of 9mm inflation valves but we have the 45' strut valves in stock in case you need them here:
www.kitebud.com.au/product/adhesive-replacement-valve-45-one-pump-for-airush/This 9mm valve is very universal (not specific to Airush) and any kite repairer would have it in stock.
Your best bet for a quick and professional repair would be to contact Ryan @ The Sail Doctor:
goo.gl/maps/TKHeKVsLTMFffSk8AKeep in mind that you may soon have to
replace all your valves as eventually all your other valves will peel off or break. This was a problem with all pre-2015 Airush kites as back then the valves were glued on instead of welded to the bladder. The pre-2015 valves were also less resistant to heat and UV which eventually makes them crack or break off. These are no longer issues with post-2015 Airush kites.
Let me know if I can help you any further
thanks
Christian - KiteBud