I am starting to see light patches on the left hand side of my Surface Pro 4 screen. I have noticed that when I am running a heavy workload on the machine and the fans are running, that I hear minor “cracking” noises as if the glue is giving way during thermal expansion. I have seen reports of similar problems on SP2 and SP3, but not on other SP4 units. I am coming up on a 2 year anniversary for the device which has a Core I7 CPU so it can run a bit hot. Have others seen this problem? I am past warranty periods and I hope there are options other than replacing the $1,800 unit.