I wrote to Jim of ML about the right channel sounding week speacially the hi frequency. He immediately replied to me advising to vaccuum clean the speakers specially the edges and the horizontal spurs. I did that and is sounding better now but I do not know for how long will it work. I observed that the rubber like stuff which is there in the horizontal spurs are sticky as I could feel with the other end of the cotton bud. Do you think it is normal? Is it worth giving them a shower before I replace them?