Thanks for the advice about the KSN1038. I did take the piezo apart as you sugested. It did have alot of debris inside. Most of it seemed to be plactic bits, probably from screwing the horn together. Nonetheless it may have been contributing to the problem. I think most of the distortion I am hearing is coming from the mid/woffer.

I did wrap the backside of the KSN1038's with some Rope Caulk... and I must say I believe there is a difference for the better. I will likely treat the Alpha 10 baskets with something also... I am not sure about the Rope Caulk for those.

Thanks to all who resonded.