If you wish to retain the resale value of the 2000 keep it stock, a factory tune and your ready to go. I searched for months to find one that was nearly new or NOS condition, I placed it on the bench, checked all the caps, made minor adjustments to the output audio and left it alone. For 11M it out-talks my Icom locally dead keying at 4W, swinging to 7-8W .. audio is superb using a vintage Turner Expander 500 mic .. almost as good as my past Brownings according to reports.