Hello from Berlin,

thanks for the praise

The header ist from MTW (http://www.mtw-daempfer.de/html/hauptteil_krummer.html)
Look at the third foto on this site.
With an exact technical illustration with masses Mr. Weiershäuser
solders a header for under $ 40 (stainless steel). [sm=thumbup.gif] He is very helpful and fast. [sm=thumbup.gif]

The muffler is an older PEFA (http://www.pefa-modelltechnik.de/seite3.htm).

The insulator at the carburetor consists of two disks (aluminum and plastic) - very simple ...

Until later
Philipp