Sounds like you have the front roller set too low and the edges of the side plates are digging in to the grass.
Most people believe that a well striped manicured lawn is obtained by cutting shorter which is not so.
Raise the height adjustment by as much as half an inch and you should see a big difference.
By the way I have a suffolk punch 35s over 20 yrs old and it cuts my lawns with nice stripes on a higher setting.
lambo, September 2009
