I have just purchased the Ryobi trimmer but because of my age and severe back problems I have found the unit difficult to use - bought specifically for lawn edges only for a small lawn at the front of the house and similar rear yard.Perhaps I was swayed by the Bunnings team member at my local store about “ease of edge trimming, etc”.My neighbour has a trimmer with a wheel fitted and edge trimming is a breeze! Is there a wheel & edge cutter attachment available for my new unit as I feel the unit is not really suitable for me (and certainly not for my wife! Thank you.