Having a pair of these on the way I am curious about upgrading the tweeters to enable higher frquency capability. I do have a pair of 035 ti's i believe they are, and have the mechanical ability to refit, solder, etc. BUT, I realize that crossover mods may be needed to match the type tweeter I decide to use.(035 tia, 044, and maybe others). So, 2 questions" What might be a good tweeter replacement to gain in the upper frequencies? And, what crossover mods, cap changes and other considerations might I need to be prepared for? Thanks in advance, a newbe.