Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
first off...too much pressure and too much heat...that is what caused it... secondly...say ok have them bring them all in and steam them out....they are just pressure marks like embroidery gets when they have too tight of a hoop...simple fix...sam
Also true with squeegee blades.
i would flash at about 4 seconds maybe 3...8 is way to looooooonnnnngggggg you are getting them too hotsam
Sharp edges on your pallets (platens, boards) don't help. Round them if needed.