[Grzegorz Cisek]

Hi Graham,
Generally you are right. But as you mentioned to restore aircraft to their original condition original parts were needed. It was no reason to produce old parts for damaged aircraft and restore damaged aircraft to training tasks when you had in stock to disposal a lot of out of date planes. Luftwaffe needed more and more modern planes and all parts which were useful to produce new aircraft were used to this purpose. It is impossible to assume that rare in the second half of 1944 in Germany metal parts were used to restore training aircraft and in contrary modern aircraft were built of wood.