Damn, still running one of them? Talk about a power hungry beast! Definitely the best looking miner BM ever made  
I still have one of mine from ever so long ago now sitting in storage and donated 2 others to Sidehack that he used to use as heaters.

As to the 7 blocks in 4 days -- has to be a bug in the old cgminer software as it is simply not possible. Perhaps it is tied to the diff being astronomically higher these days vs when the s4 was made?