I feel your pain, I had 4 on the go at one point and 2 of them were for Invective! (got Invective 3 times, 2 got melted for energies) But I got there and now have all 5 currently available bounty exotics. I've turned down 2 more since but I'd accept the easier ones again as a source of Ascendant Energy. Just keep going fella, focus on the exotic bounties for a couple of days and get them cleared. Use the companion app to check the Gunsmith every 3 hours because eventually he will sell blue fusion rifles. Will help with Xyor if you free one night, where you from?