It's quite natural for LW to drop off hosts as it nears 100%. Keeping in mind some of those hosts may well have been partial file sharing so you were downlding a % of what they had already downlded. The best trick is to search the topic again to find new hosts or else, cancel the downld & reselect from a new search.

But I think you'll find the last 1% of a video is only the credits & in fact you have the movie content itself. One way to check is to open the file with your video player & check. I've simply cancelled such downlds after finding just that.