Hi Alejandro and Arch

Thanks for yours advices. I did modifications. In the box of CDI, there were plastic cordons for wrapping wires, so I used them for that and I put a tie-rap to fix socket plug.
I did 3 flights next week end with APC 18,1x11, fuel with 10 % oil and 20 % nitro for break in.
For the others flights I'll use fuel with 6 % oil and 20 % nitro. Very easy to start, I just set up by turning speed needle valve.
http://www.yspower.co.jp/en/data/pdf/DZ170cdi.pdf
Regards