I noticed my Pentair IntelliFlo VS3050 pump leaking a little the other day and checked it out more closely. Looks to me like it overheated. The pump motor where it mounts to the seal plate is all melted and crumbling. Did this happen because the pump ran dry at one point or another? I am going to have to replace the motor assembly but what else goes bad on these when that happens? The Seal Plate?