Problem with incomplete download
Sometimes, you will notice that certain files download stopped at 99.5%, 98% and so on. The problem lies in the hash checking. You can actually stop the respective files and do a manual hash check. After the manual hash check has been completed, you will need to start the download process again. Usually, this will work unless there are really no peers having the complete (100%) files. In this case, you will need to wait for the seeders or the peers having the complete files. Alternatively, you can try to install the eDonkey plugin and do a search for the file on eDonkey network to complete the files download.
Tips to use selective download
If you are trying to download only selective files for a torrent instead of downloading the whole torrent, you can actually choose what to download as shown in the diagram below.
For an instance, based on the diagram above, you can uncheck the files for Episode 1 and 2. By this, you will not be downloading Episode 1 and 2 for the whole torrent.
You can also customize the download order if you want a file to be completed faster. Based on the diagram below, you will need to check on "Enable customize file download order" and you can move the file download order up or down based on your preference.