Strange noise would be associated with something being wrong or the diff not being a V-LSD. Ie, a mechanical 1, 1.5 or 2 way would make clunking noises around corners.
More related to this thread, I spoke to 2 diff places who said they would be happy to shim the diff, although they called it something else I can't remember now, but said it would probably blow up in about 6 months and I shouldn't waste my time. Also said it's nowhere near as good as a mechanical one.