Sonarr Download Tuning

Sonarr version (exact version): 4.0.3.1413
Mono version (if Sonarr is not running on Windows):
OS: QNAP QTS 5.1.5.2679
Debug logs: 6cc653b4 - Sonarr SABNZD
Description of issue: Sonarr/SABNZD not downloading available files

I have SABNZD and qBittorrent as my downloaders in Sonarr with SABNZD/NZBFinder configured with a priority of 1. I notice sometimes that when I make a request for a TV show it will try SABNZD first as it should, but then it runs into incomplete NZB files and then either stops or reverts to torrent. But when I got onto NZBFinder I have no issue finding complete NZB files for the same TV show.

Is there any way to configure Sonar/SABNZD to retry a search or download if it comes across bad NZB files? Now as you can see it’s trying to download torrent files that have no seeds so it just sits there and does nothing meanwhile there are available files on the Usenet side.