hesitation in 1st n 2nd

[coupebuddy]

96 ka no emissionsmsd 6a,blaster 2 ,ballast resistorignition charged with relaynew fuel filtersemi new o2 2 mafsfuel pump worksok i have been having this hesitation in 1st n 2nd gears its only slight but it makes car lazyI got code 21 which is ign. primary cicuit but ign. works fine i tested itI advanced the timing and it went away but it still noids mehas any 1 had this same problem if so any in put is appreciated