You might want to consider a bicep tenodesis...I know it is often performed on failed slap repairs. I know riderk can speak to this too. I had a bicep tenodesis on Jan. 4th, and two weeks out my recovery is going very well...really no problems to speak of (hope I didn't just jinx it). It could be that the bicep tendon which is attached to the top of the labrum is peeling back the labrum and not allowing it to heal. You can google it there have been a bunch of studies comparing the two. I know someone posted the same study here on another topic. The study has something like 14/15 of the patients who got the tenodesis were happy with the results, compared to like 40% or 60% for the slap repairs. Just a thought.
Only other thing I can think of to help with some of the pain is KT tape. They sell it at Dicks for sure and some sports authorities. It is the stretchy tape you often see beach vollyball players wearing on their shoulders. I have a torn labrum in both shoulders, and I use it on the shoulder I haven't had done yet. Buy the tape, go to youtube and look up "KT tape AC joint". It helps a tremendously...especially if your having trouble at work and have to lift things. Its highly doubtful, but the tape may give your shoulder the extra stability to finally heal. Worst case it eases the pain while at work. There are options out there...don't be discouraged. Hope things work out.