Hi Peter,
Good that your leo engine is on its way to you now!! May I have a look at the link where you bought the engine? I have never heard of Leo engine so would be interested to have a look.
Also, is it a sliding or rotary carburetor? My force is a rotary which i adopted the cable and sleeve for 90 degree control bend. A sliding will be much easier to install i gues
Thanks for your help with the main shaft. I am looking at extra 2 cm longer comapred to the original and I think a 4mm will do me fine.
Good Luck!
Lawrence