Third clue.
Bessler said in Apologia Poetica, "These foolish ravings of my enemies will be held up to total ridicule by all intelligent people, who, with true understanding, have sought the Mobile in a place no different from that in which I eventually found it."
To paraphrase the above, Bessler said intelligent people had already looked for the solution where he found it.
In hindsight this clue reveals something so astoundingly obvious that I find it hard to believe that no one has independently thought of it - I certainly didn't. The history of overbalancing wheels shows that the same designs are repeatedly 'discovered' by each person who comes fresh to this subject.
JC
