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Hi. I have the original DS2 ignition. My timing steadily increases from 12 BTDC at 800 rpms to 30 BTDC at 2500. From 2500 rpms up, timing retards to 25 BTDC. This is with vacuum advance disconnected. Has anyone had this problem? Could this be the distributor, the module, or the harmonic balancer? Thanks.
 
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