Here is my long awaited report on Jewell Aviation, Kennett MO. It is long, could be longer. Tried to be fair as possible.   The Engine Diagnosis:   Back in 2020, I started getting consistent ferrous metal returns in the oil filter of the IO360A1B6D in my 77 J Model. I was also seeing the alloys spike in oil analysis. The amount of metal never exceeded the Lycoming recommendations but it was clearly not getting any better.  I spent a lot of time going back and forth on the opt