Yeah once the engine is worn in a bit there is no problem.

But the lighter weight of the MA prop, coupled with the removal of the flywheel, which is there to smooth out idle and deal with newbie mistuning, can be quite problematic for a novice with a brand new PTS engine... the claims of it already being "broken in" ( yeah, right ) not-with-standing.

I find that the PTS needs a gallon or more run through it, before it settles down. Usually the 'Grey goo' also disappears at this point.