drive it

iTrader: (1)

Any help greatly appreciated!!! I have a 700r4 in an 86 vette. Lots of mods and wanted to increase the shift point. I've installed the b&m kit-diff spring x1 to start. It used to shift at 4800 at 1/2 , about 4600rpm at 2/3 and 4400 at 3/4 shift. Now it will shift at 5900rpm at 1/2 shift, 5100 rpm at 2/3 and 4400rpm at 3/4 shift. Is there any way to make it shift at the same rpm at all shifts??? This is aggravating! Thanks in advance.