Picked up a pair of these fine speakers in perfect condition. my first pair of klipsch. Love the way they are built and the quality wood they use. After researching these on line I see a lot of people have them re capped. so I bought a re cap kit and risers for the cabinets and my ? is will I notice a remarkable difference when I replace the caps? They sound good now, the guy that sells all the reuild and parts for these speakers says absolutely needs to be changed. Any thing else short of replacing tweeters that I should think about.