Guild Wars 2

I’ve had pretty good luck with drops for the collection so far. The chak one I got just from simple exploration.
As for the other parts of it, I can’t seem to figure out where to trade crystalline ore at in order to get the other parts.
Lastly, It seems that the quest that unlocks Drone Race is bugged and wont progress far enough to unlock it, so for the time being, I am at a dead end.

Event Not Progressing!
Map: Tangled Depths
Area: South East of Scar Bivouac
Event Name: “Protect the cannon until the Mordrem migration is stopped.”
Currently this event gets stuck at the top of the slope. It stops to “warm up” gets about 4 charges and then bugs. Waves of mobs infinitely spawn but no progress is made. The bar for “Fires Set” never fills. Even after mobs are cleared and the cannon is left alone nothing happens. The char just keeps repairing the cannon forever.
Also after the first wave mobs stop giving credit towards the event and you become inactive.