Yes good advice, appreciate it. This crew who removed the old props are installing the Veems. They have been criticizing the installation of my old props all morning so I hope they know what they are doing. Just to give you a brief history this boat has had a significant vibration all its life, 20 years 4 owners. Each has paid big bucks for: alignment motor mounts shafts cutlass bearings harmonic balancer injectors Turned out the early Eastbay 49's had too much unsupported shaft. Around #50 they installed a bearing in the hull. So we did that, laser targeted, moved the motors.... smooth as glass even though the prop shop said the props are waisted.