great pics, thank you. I also striped some of the insulation around the lead wire (about an 1/8 of an inch )& put it in between the coils of the spring. When I finished I put the prop on and flipped it a few times & got spark.....yeee hooo. however, I did not see a spark every time I flipped it, I heard it pop every time, maybe a big spark every two or three flips....is that normal