The bridge removal was recommended by Roy Gregory in one of the early issues of HiFi+, for all of the reasons mentioned above. I do not believe there was any mention of bearing tensioning, although he did mention that you need to be careful not to overtighten when putting it back on in order to avoid deforming the cradle, thereby affecting the free movement of the bearing. I tried it on my SME IV, but I didn't feel comfortable leaving it that way. Although I "thought" I could hear a difference, my recollection is that it was not great enough to warrant marring the beauty of the arm. On the other hand, that was a long time ago, and some of my components, including my TT, have changed since then. I haven't thought about this in several years -- maybe I'll try it again and report back.
Enjoy!
Neil (no relation to the other Neil)
Enjoy!
Neil (no relation to the other Neil)