It seams as though my factory limited slip on my NX has been diing over it's 100,000 mile life. After a full trany rebuild, I noticed the launch was different. The factory limited slip is failing. Any one else noticed this also? I was thinking that the Quife Diff would be a better replacement over the factory viscous unit. Any input? Where can I get a good price on a Quaife? Is it true that the Quaife produces a bit more heat? Any help would be great and is needed. Thanks blokes.