Tony,
Mine did about the same. Factory trigger seemed to be getting a bit smoother and somewhat more predictable as I shot it more. I remember thinking , "Maybe there's hope yet for this thing."........
About that time Bob's trigger arrived. After I installed it, the gun went from being like night time and me being greatful for weak batteries in a flash light, to all of a sudden it was high noon !!!!!
If you find the Uncle Mikes machine/wood screw set, If your stock is like the Whisper's, don't forget to put the knurled nut on the thread first to act as a spacer or the swivel loop will hit the stock before the machine screw tightens down on the stock.
Paul.