I have been having a hell of a time trying to get my timing set properly. it seems to run best at about 20*, but i can advance it to 30* without any knock, even when i rev it. i know this isn't right... so i pulled my #1 plug, found TDC with a screwdriver, and it is very close to what my timing pointer says, so i dont think i have a spun balancer. here's a pic of my dizzy, and where my finger is, is where the #1 wire is on the cap. someone on here told me i needed to spin it so the metal on the rotor was pointing to #1, so i spun it 180* and lined it up with #1 on the cap. tried to start it and it wouldnt turn over, then BOOM! major backfire. so i have put it back to where it was for now. What am i doing wrong?