<div style="margin: 0in 0in 0pt"><span style="font-size: 9pt">I have a similar looking NGVout of one of my motors but nothing forceful happened (thumped) to it for me to think that these cracks were caused by anything but overheating. I had similar cracks and erosion that were not as bad and I managed to resurface the NGV to use again. My point is that I think that overheating can cause the cracks that cause the erosion. I assume this is the course of events that took place here versus erosion causing cracks. I also assume somethign else happened to this motor that caused the overheat in the first place.</span></div>