Your post is misleading regarding the updates I made. As set forth in my original post, I swapped out the aging crossovers with Bob Crites' crossover... same circuit with new, higher quality parts. I see in your signature, you are using the ALK Universal Network in your speakers, a completely different circuit, so I'm not sure I understand your comment. I would like to hear the ALK crossover for the Fortes, but went with Crites specifically to avoid changing the overall character.
The improvement is immediately obvious to most people on this board who have made that update to virtually any Klipsch from the 90s. The Crites titanium tweeter did very little to change the overall sound or balance. They did eliminate a hiss from the old tweeters and I sense a very slight improvement in decay on cymbals/triangle, etc. The No-rez is a cabinet dampening material. I haven't seen anyone on this board complain that additional cabinet stiffening or damping changed the overall sound of their Fortes. Further, the dynamat dampening of the horns was an obvious improvement in clarity to my ears.
The 2 oz. washer on the passive honestly made no difference to my ears. Some people claim to hear a slightly deeper low end... maybe I do too... I'm not sure... This is certainly a "mod" but it's so minor and may only effect the lowest frequencies, I doubt many people could hear any difference in a blind test.
Anyway, if you follow threads on modding Fortes, I think you'll find that very few people are disappointed in these changes. My Forte IIs have the same overall balance/tonality as they did in their original state, but with noticeable improvements as mentioned above. It was fun listening for the improvements each step.