I used the duraforce a good bit, put the new primer button , and the mulch plate. It really mulches well due to the power. I do wish it was self propelled as it is tough to push( i wonder if larger wheels would help). But for the trim work its fine, very pleased. It was a bit tough to start at first , till i found the spark plug gap was almost .060. After that it starts nice. I used it on some tall grass and even with the mulch plate it really did not bog down.