The backlash of the cartridge was noticeable from the first days. But the service assured that this is normal. It turned out not at all normal, since the gearbox was covered after 3 months. They made me pay. After 5 months, work was covered at the first speed - crackling. They made me pay again. After 12 months, smoke came out during work. Shurik is dead. Same with my opinion of Makita as a pro.