For this entiret week I shaped and shaped the engine baffles until I finally got an almost perfect fit with the upper cowling. This was a very tedious slow process, sometime very discouraging. I had to make very smal cuts in each piece. I must have put on and removed the upper cowling 200 times. Maybe someone else can do this faster, but I could not make the fit rapidly. On the 18th of July it was done.