Timing Retarded

It's a \6 225 with AutoTrans. I'm using a dell/volt/rpm meter. I don't think it's the weights because I've got vacuum removed at this stage (first step tuning), RPM set at 500. Manual says RPM should be 475 to start and timing should be at 0. 575RPM should be 0-2.5. When I rev it up it advances properly.

I don't see how mechanisms or dwell could have anything to do with the timing mark being after TDC at idle?