Guild Wars 2

It was announced, in the mysterious ANet Way that the grenadiers had been sent back and in more respectable numbers. I attempted the run last night with my guild, Killed the first group and went to the first boss. 10 minutes down the line there were 9 of the larger Engineer patrols. I am not sure if this is how it is supposed to be, or if they have not truly fixed it. Tried the Kiting method, to no avail, still 9 of the Engineer patrols. Does any one have advice, are we too slow in moving forward?

I attempted Path 1 as well.

Just 5 mins into the dungeon we know this is going to be insanely difficult then we give up into path 2.