hi all! The front roller shaft ends and shaft become worn over time and become slopy this can affect the cutting hight. it is very aparent as the roller shaft will have wear marks i bought a new shaft but the roller ends needed sleeving i found some brass tube at a hobby shop that fitted nice over the shaft but a little loose inside the roller ends so i cut some very thin brass sheet and fitted that into the roller ends then the brass tube over that seems reel good now feedback kindly appreciated steve....