Thats exactly how I fly my Axe CP.... with Blade CP main rotor blades. I removed half of the black shim and kept the other half on. She flies really nice. The shorter blades force you to use a higher throttle setting to produce the same amount of lift than the stock blades (since the stock blades are longer and produce more lift at the same speed) and as a bounus the higer head speed will also help stabilize the Axe along with giving crisper cyclic response!!