Interestingly the Thai Air Force performed quite well during the Franco - Thai conflict. Additionally, they also used the Curtis P - 36 Hawk which was also operated by the Chinese Nationalist Air Force, the Dutch and later produced under license in India - so not too much of a potential logistical stretch. However, they also operated Japanese aircraft which I imagine would be discarded due to logistical and potential friendly fire incidents.
The RTN performed poorly during the Franco - Thai war, but in saying that if they survive the exit south and avoid the marauding IJN and Japanese air fleets. Given time and an opportunity to work up properly their performance would improve.