I think you need to move into the 21st centuary Oly463 K13's have not been built by Schleicher since 1980 and even Jubi of Oerlinghausen ceased licensed production in 1992. They had a fantastic workshop which I visited when landing at Oerlinghausen in a T21 which we aerotow'd across from RAF Gutersloh in 1988. We watched some of the craftsmanship going into the wooden wings of a new build k13. Unfortunately the craftsmen have become very scare in the modern era and construction was slow and expensive. The club at Gutersloh had two new Jubi K13's in the fleet. One of them is now at Cranwell and reaching the end of it's life because of the 3 yearly mandatory inspection and the glue issue. It is getting increasingly difficult for the club to find engineers/inspectors with the correct skills in wood and welded steel tube to maintain it. in the not too distant future the club like many others will have an all plastic fleet.