Hi,I have had several suggestions on how to remedy this situation, but so far, no results.My 1977 Chrysler 22 is a masthead rig using 5/32" wire for the stays and shrouds. Under certain circumstances over 8 knots of wind, the rigging (and it seems to be the forestay that has a CDI furler), starts to rythmically "thump" severely. This started happening after I bent on the 150 genoa a few seasons ago. I've used a Loos guage to set the tension to spec,...was told to "crank-down" on the backstay,... increase tension on the shrouds and try putting more tension on the genoa luff. All of this has not helped.Do you have any suggestions?Thank you for your help.