Never heard of this. Top wrapping shouldn't change anything between the nut and the bridge. Because of that, I think there is a lot of "voodoo" in top wrapping. People say the tension is less, but a string in tune is a string in tune... that tension shouldn't change. That said, I do it - and happen to like it. Gibbons, Page, Wylde, etc. all do it...
I had a GC in Detroit setup one of my LP copies, and told me "I need to go back to rock school" if I think top wrapping is good or does anything at all. I really don't like anything about any of the GC's I've ever visited, but I digress.
I've traditionally only have seen this as a solution to tighten you tailpiece to the body without having the strings bottom out on the back end of the bridge. Nashville bridges have been swapped out for ABR-1 bridges to account for this too.
Lots of threads on top wrapping, you might be able to dig up something useful to answer your question.
- Nic from Detroit...
posting on JB's Forum since 6-2-2006Ask me about my handwound
Great Lakes Guitar Pickups Since 2010, Bonamassa fans have taken advantage of my JB friend discount = my cost + shipping.
