After 17 years in a coastal environment, the G5500 boom clamps are severely rusted and need to be replaced. Anyone know of a replacement candidate, preferably stainless steel? Picture at: https://www.dropbox.com/s/6jxdcwg42z3awew/20190413_rusted%20rotor%20boom%20c lamps.jpg?dl=0 Tnx, Ken, W7KKE