Correct way to us Shure VTF gauge?

Hey guys, I have one quick question for anyone using the Shure Gauge to set VTF. Should you make the arm bounce slighty after placing the stylus on the gauge. The reason I ask is because when I just gently place the arm on the gauge using the cueing lever it wll give me a reading of lets say 1.5g, then if I bounce the arm a little while it is resting on the gauge the reading will stop at aprox 2grams. Are you guys finding that you get a different reading when doing the two above mentioned methods, or are my RB300 bearings screwed? Is there something terribly wrong?

Thanks for your time,
Dave