Polishing Vertically:
Harley D;
You have taught me something. As an Ag pilot (Australia) I never thought of polishing my goggles with a vertical motion but to do so makes sense. I wonder what else I dont know!! Best.
O.P.
P.S. As an aside the Harley Davidson is not my favourite machine, prefer the Norton or AJS but Harleys do punch out a great sound.