I have a Cub LTX 46 inch.(2 blades). Because of our hot Texas weather,I cut my St Augustine at the highest level and it leaves a very,very small trail of higher grass in the center. When I cut the scrub grass I cut it lower and it cuts it level like it should. When its time to replace blades,are there any brand of blades that might cut better on the high setting? Not a big problem,since I live in the country,only the dogs and I notice the cutting of the grass.