I found that problem too with certain shift knobs. It needs a certain weight to work right. I had a Momo Carbon fiber shifter that was too light.
__________________
Sponsored by: KAM Racing Sports, Falken Tires, Progress Technology, Brady's High Performance, Taggart Performance Engineering, Rotora Brakes
Autocross is: 90% driver, 5% car, & 5%
CRAZY MOJO!
Autocross Help Page