Has anyone out there HotRodded a tx-11B tuner ?

I have a tx-11b tuner that I keep in my office at work.
It receives stations better than any tuner I've used. The sound quality is quite good, but nowhere close to my mcintosh mr-78. Is there any way to hotrod the output stages of this thing ? I would have this professionally done.

Also, would I be better off putting the money into this or into having the long-range tuning ability of my extra McIntosh MR-71 improved ? The 71 actually sounds a little better than the 78, it just doesn't get the stations as well.