I have been working with gr8flyer55 to make a presentable CDI schematic and board. Attached is a Zipped file with the timer schematic he developed and board design with a bill of materials. Those people using Eagle will be able to open the Eagle files and manipulate them. Non-Eagle users can open the png files. I strongly urge installing the free version of Eagle so you can manipulate and print the files as you need them.

Unfortunately, I cannot figure out how to post either Eagle files or zipped files here. Moreover, converting to jpg may introduce dimensional errors. If someone knows how to post the correct formats. let me know. Otherwise, we could start a thread on a forum that will support those formats.

John