I can’t push my vacuum on the carpet

I just received my Dyson DC65 Animal Ball 2 vacuum last week. It works great on wood floors and low-pile rugs, but had great trouble on our thicker pile carpeting. The brush head would suck so hard that it created a seal against the floor and became impossible to move.  After reading various solutions on line I called Dyson and they agreed to send me a new sole plate for the brush head. In the mean time I modified the original one in a simple way, by drilling a series of 1/8" holes through the sole plate, along the curved face behind the brush. This allows more air (and dirt I suppose!) into the head and the brushes still go fairly deep into the pile to pull out deeper dirt. This is precisely what I wanted, and it would be easy for Dyson to provide alternative sole plates to customers with thick pile carpeting.