Another option is to source the same files from a private torrent from a public one by the same uploaded/release group, and then recheck and upload the same blocks to the private tracker as a completed or nearly completed download, without it affecting your quota much if at all, with all uploads benefitting your own ratio.

Many private trackers also have a higher ratio multiplier for dead or nearly dead torrents to promote seeding of those torrents specifically. I’ve also seen quota-free days and torrents that can be downloaded without a quota impact, uploads of which will help your quota get back in the black.