farthest rejet from stock edelbrock

[veltex]

what is the richest anyone has adjusted an edelbrock carb from the way it came? I am still fighting a lean cruise condition, am going to wait on hold again tommorow for edelbrock tech, and try to get some good info, so far I havent. Have tried everything else, going to just keep going until cruise seems rich and then back up a little, problem is I am at the top of the graph for my carb, so I am comparing where bigger carbs start and use their graph, its good at idle and off idle and good wide open(but could be better) but the pinging at cruise is a bad thing and no soot in pipes and plugs are clean white most of the way around, it is a 1806