>
>   Gene,
>      can you say more about how (the mechanism which causes)  cycling the
>   prop to lower rpm hurts?
>
>   Colyn
>
> > YES YES as WALTER said cold oil high MP a wastegate issue.
Colyn  I don't know the tech aspects behind this. I suspect it puts
excessive loads on piston/cyl perhaps cocking piston in bore and scuffing
piston skirt ,I will ask my engine builder to elaborate further. maybe
Walter or George could explain further.
Gene