After installing Nellie's new Cushyfloat 45 engine mounts, the vibration data shown by the graph's red line were collected. The amount of vibration was greater than expected. I suspected that the aft, starboard mount was a little low. So, with the engine running, I began the leveling procedure by loosening the mount's nut (shown in picture).
I was surprised, to say the least, when the vibration instantly stopped. By loosening the nut with the engine running, the engine adjusted itself to find its own natural neutral. At this point I re-tightened the bolt. The graph's blue line shows the marked improvement.
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