I have just started using free weights after having previously used 'assisted machines'. On those I could bench about 150lbs but on a free weights bench press I can only do around 50lbs. My biggest problem is when using the bench press I find it very hard to balance the weight above me. I think this has something to do with stabaliser muscles but I am not sure. Does everyone have this problem of not being able to balance the weight when they first start out?