yes i know my timing sucks

that's why i came on here to ask what to do.
also, my other question wasn't answered.. so putting a -% setting on the SAFC will ADD or take away air?
my impression is that a -% adjustment will "take away" air therefore "take away" fuel.. someone PLEASE clarify this..
edit* also.. after i changed the settings [HI 3k-6k rpms] from 0 to -9% i noticed a GAIN in timing.. suffice to say.. isn't my mediocre tuning helping a little bit?