Sorry Tom, I have it on good authority that your crossover-tube-thingy will never work, so it would seem (I've been told) that it is a complete waste of time. Now mind you good sir, I only tell you this so as to save you the unnecessary trouble and expense of continuing with this useless endeavor! Now if you've heard this somewhere before I humbly apologize, we may have both heard it from the same source... You may disregard my previous comments stating otherwise, sorry. (For someone special)