Jason LeFrense

Hello, Im new to the Pilot but I have been using the glidecam for about 4 years now so I have a little knowledge of how this works. I am find that everything is a lot smoother but I seem to be getting a little bit of vibration when my feet hit the ground. I'm not a big guy so my weight shouldn't be this issue. I flying the 7D with a little bit of extra weight. I am thinking it might be the arm since this is very knew to me or I need to add more weight the camera ? Any suggestions would be great.