HI Manfred!
That plane picturered is not mine. That was taken at a museum located near the Helsinki airport. I did have the same fuse made by a fellow in Finland . I had retracts made by a company called Innovative out of Texas. I don't know what happened to them . I know the 1/5 scale me-109's this fellow was building had shaft extensions on some versions so the head of the ST 3000 sat further back in the chin scoop. He made only a handful of the planes . The retracts I am building into my CMP 109's are Sierra . These are the ones that were designed for the KMP Me-109. Tero T