i have been reading the "j. reeves" version of setting the timing without having the engine running. I have a couple of questions I would appreciate some help with. The first concerns setting the timer base against rubber stop at end of advance stop screw. Does anyone have a picture of exactly what/where i would find that? The second question concerns using a spark tester to number one cylinder plug wire and then and then hooking timing light to the number one wire. What purpose does the spark tester do? Anyone happen to have a video of doing this procedure? Thanks in advance to anyone who can educate me on this process.