Only had it a week. The operator says it's doing fine. We do mostly rough mowing (school yards) so the quality is not as critical as the speed, toughness and economy of the operation for us. The operator says it holds hills better than the 757 did.
We have a GF 1800 with the 18 hp Kubota in it and a Bobcat 463 skidsteer with a 22.5 hp Kubota in it, so this is our 3rd Kubota engine