I have never had my standing rigging hum. I have had my mast pump a little at the dock in a heavy wind. I would suggest you are a little tight. I do not use a Loos gauge when I adjust rigging. I set my mast square to vertical and adjust the shrouds to keep it there, just firm. I then take it out to sail and adjust shrouds under sail to keep it vertical. Leeward shrouds are just breaking from firm when I have it where I want. I do have back stay adjustment as well. When I bend mast in a heavy wind, it stays in line as well.