"Have you tried the string couplers that Scott Jones sells? I have been mostly successful in reducing front duplex noise with these couplers. Sometimes you have to experiment with the position of the coupler and how many will be needed to reduce the noise." - Don McKechnie, RPTYes, these can save the day! Another way to get the same effect is with 2 small rare earth magnets, one for the middle & left and another for the middle & right. Arrange them so the they are attracted to each other. I use these all the time. If you get the effect you want you can then install the string couplers for a more "permanent" solution. The magnets stay in place pretty well but, of course, can move around a bit.