1970 S

Hi All.
My S runs great.
From the engine restoration has over 5.000 km. done.
The bike has a Pazon I.E. and is setted like x manual.
From the beginning the rechromed exhaust pipes became both blu fired.
You could think the timing is advanced but the strobolight says that is well setted.
Thanks.
Piero

I have read that the timing mark can be off by several degrees on a Commando. You might want to double check it using a degree wheel.
John in Texas

It also could be running a little lean on certain openings of the throttle and that will make the exhaust gases hotter than normal.