Hi, we had this bug aswell for around 10 resets, we tried every possible solution anyone on the internet had, still no luck. Then we combined some of them and the way we did it with (not saying this is the correct way, maybe we got lucky?) was by doing the following: 1. Find out how many clicks on each part it would take south and north. And by doing this you need to know another thing both north and south have DIFFRENT order of colors. North one got Purple-Red-Green-Blue-Yellow-White so if the middle color were for example Green and it needed to be Yellow, it would take 2 clicks on the RIGHT console. The order for the SOUTHERN Pylon is White-Yellow-Blue-Green-Red-Purple. Indeed, the same order just turned around. So find out how many clicks each way it takes, as the fewer number of clicks you do the lesser chance it has of bugging, if you are not limited to a number of clicks as sometimes it would still be clickable on the 4th wheel but the color wouldent move. 2. Now, when you have figured that out you want to start by pulling the mobs on each side at the same time, CLEAR them and then start pressing. And we waited for EVERY single mob to be dead, EVERY single wave before we pressed again. So always clear out the mobs, there are NO timer on the boss. 3. Always let SOUTH Finnish each row first. Always SOUTH. That's it, Good luck I hope this helps you. Alot of people don't want to share their way because they are too proud of discovering this, hopefully it will be fixed by Bioware but if you do all three steps above, you will either complete the event or something very random will bug out, but that's only random. This ^ is the hidden MECHANIC of the fight.