I just got a pair of these 2nd or 3rd hand and would like to know where or how to find upgrade components for the crossover and the no Rez material. Is it just a matter of removing the crossovers and replacing the caps with better? Ski ninja is no more and I haven't had any luck on any of my other searches. Obviously I'm just starting to get my feet wet in low cost hi fi. I've played a little bit with some 3116 amps and have basic soldering skills, just not much experience. Thanks in advance for any help.