8 degrees retard on stock timing table.

[Scrufdog]

For my 1995 Burb, in my sig.

So I noticed this awhile ago when I advanced the entire table 4 degrees. A lot of retard around 1600 RPM, especially at low vacuum, 70-75kpa. My current tune has the timing tables back to stock and I'm still getting the same 8 degrees retard in the same area. Base timing at the distributor is 0 degrees.

The cap/rotor/wires/plugs are all about 4 months old. Havent pulled the plugs to see how they are doing yet, wanted someone to sneak a peak at what I got going on, maybe I missed something somewhere in the tune. Overall the Burb runs great and gets about 13mpg.

I've attached needed files.

Thanks