To give a better 'lead' for my No. 2 ignition lead, I found a slighter longer screw for holding the carb top-cover on, and used this to hold a small plastic covered 'P' clip onto the top of the carb. I lead my No. 2 lead through this 'P' clip---I have not suffered any chafe problems.
Can I ask what this 'P' clip is?
The fiat brackets are a bit narrow and run a bit close to some hotttt bits