ok i well i tore down the valve body of my 4l60e to see what this so called shift kit was that they installed, well here is what i saw
1-2 and 3-4 accumulator spring completly removed
ONE check ball is yellow and bigger(think its a torlon ball)
looks like they drilled my valve body plate

this is what i see so far, this thing shifts incredibly harsh at any rpm ,im talking neck snapping and dash rattling hard, it was unberable.

anything else i should look for that they may have done?could he have turned up the pressure manually anyhow or is it all pcm contolled? Im going to correct this and purchase a trango ,
i do not want the shift to be crazy hard as it is a daily driver, do yall think trango-Hd2 kit is a good buy for my daily driving needs?

also anyone know a good place to get a extended slip yoke? just noticed my trucks yoke only goes into the tail maybe 1-2 inches if that