Sure Dave, pics are attached. Case is in good shape with strong threads and just a little marking on the inside. Discoloration is from the last flight on an AT I59WN, very hot motor. Looks like it burned between the grains.Any pics of the inside? I am interested. Do you know what caused the discoloration after only 2 times? The one looks like liner may have burned through and overheated the case. The others look like some sort of corrosion.