Im running a puma same set up . 8-10 10 top end with my three blade . I have never ran mine that low either . I just went out to the shop to confirm my set up . At setting 5 Im at 3″ below pad . At 8 Im at 2.25 to 2″ at 10 Im at 1.5 plus or minus an 1/8″ . At a setting of 3 your like 3.5 to 4″ below pad . If your running a Yamaha prop thats to deep . Thats like fury prop deep .