Whats a good place to farm for Destroyer Cores?

I have been going in and out of Rata Sum to kill that group of Destroyers in hopes of getting the 3 Cores I need, but even with the update that supposedly increased how often they drop, I have not even gotten a single Core yet. :[

If you've beaten the main quest, Glint's challenge works pretty good. So does the ravens point quest, though you only get destroyers briefly on the first level and half way through level 2.

I got 2 cores while fighting with Olaf. I didn't even have the quest yet. 1 more to go.

Here the link to farm for Destroyer Cores.

Link:http: http://www.guildwarsguru.com/forum/s...php?t=10194688

I get about 20 an hour just doing the first wave of Glint's Challenge over and over. The heroes/henchmen kill all the mobs so I just flag them at the start and read a book for 5 minutes then resign and go in again ^^

It's boring but being able to afk is cool and it's so much easier than solo totem axe farming which has been my main income up to now. You also get quite a few yellows off the first wave, rarely max damage but lots of perfect inscriptions and components to salvage. I'll be doing this until all the rich people have their gloves by which time I'll be rich too