I've posted this question on both the Modifications & Analog forums and haven't gotten a response. Can any of you guys answer the question for me?--I've seen info on the XL PRO multi-tones conversion and it sounds VERY interesting to me.---Is there anyone in the U.S. that does that multi-tone mod on the XL PRO?? And if so--who does it and what's the cost?--Maybe there is no answer to my question-but I haven't heard "boo" out of anyone-one way or the other.----Thanks in advance, Del