The 2 trash pulls b4 XT can be made much easier if you have the whole raid stand back in flame's room, then have somebody pull the mobs while mounted, and have them run to the raid.
The little mechanical gnomes aparently do not chase you, because they like to spam "defence matrix" or something similar in name.
raid waits in flame's room >>> sum1 pulls trash while mounted to the raid >>> kill mobs >>> go kill the mechanical gnomes who didin't move.