I did not want to just extend the timing tab without checking for myself first . I found a small printable degree wheel online . it is as they said 35btdc leading edge and 15btdc trailing edge at the pickup point on my 167fmm engine . I also have the original 163fml the bike came with , exactly the same timing points . In order to insure a clean sine wave I may remove the original tab completely and add a full strip tab .
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