Just wondering if other owners are experiencing worn grooves on the ink window from the cap threads. Obviously the cap isn't coming to rest dead centre on the barrel. The scratches are quite deep on one side of the ink window and I expect will become a weakness in time if the cap keeps biting into the ink window. I've known about this for a long while but just wonder if anyone else is experiencing this. I'd be slightly put off sending it in because I was without a Homo Sapiens for 5 months when that was returned to Italy.