You must be able to speak Gnomish to accept this quest.
Starting the Quest
You need to talk to Gimdimble Fizzwoddle (titled as "an ambushed gnome") after saving him from two level 66 Doomwing Ambushers. If just the ambushers are up, kill them. When they respawn, Gimdimble Fizzwoddle will be with them. Kill the Doomwing Ambushers before they kill him! ( 110, 70, 580 ) /waypoint 110, 70, 580
He now starts you on the quest right away, instead of meeting him back at the crash site.
Harvest the Goo and Sample the Soil
Harvest 5 purple goo from the blue rivers. They appear to be on a respawn timer of about 3 minutes.
Return to Gimdimble Fizzwoddle at the Crash Site ( -20, 43, 500 ) /waypoint -20, 43, 500 and receive Fizzwoddle's Core Sampler
Sample the ground using your Fizzwoddle's Core Sampler (Note - using the Sampler does not break invisibility, and you do need to make sure the title of the area comes up before you can use the item):
You can harvest without aggro. Wait for the two roamers to move far enough away and reinvis after harvesting.
Return to Gimdimble Fizzwoddle.
Harvest the Dizzwangle
Travel to Halls of Fate and go to the center island. Head for ( -50, -400, 35 ) /waypoint -50, -400, 35 and start gently traveling down towards the island bottom.
Harvest a Gnomish Dizzwangle from the very lowest reaches of the central Halls of Fate island ( -127, -774, 305 ) /waypoint -127, -774, 305. (If you are riding a leaper, it will only be a slight bump after you have harvested it.)
WARNING: Once it's harvested, you will be tossed up in the air. Consider removing your gear before doing this so as to avoid repair costs if you miss your landing, or better yet, wear a cloak with Featherfall.
NOTE: If you have spent any time in The Sinking Sands flying on the dust devils and have learned how to steer to land softly, this toss should pose no danger to you. Remember! You CAN steer when airborne! Facing inwards towards the center of the island when harvesting helps ensure you land safely.
Grab Gimdimble's Tools at ( 240, -355, -32 ) /waypoint 240, -355, -32 on Halls of Fate island. Remnants of Xoch is the straight west island.
Return to Gimdimble Fizzwoddle
He then tells you to kill the 'thing' on the island. No more info is given.
Kill the Young Dragon on the isle
Kill the young dragon 65^^^ heroic (quest name, no NPC credit) on the Halls of Fate main island.
The dragon is underconned and fights more like a 70^^^ heroic name. It is immune to root and mez. It also has an incredible knockback that can throw you over the island's edge if you're not careful.
Some people who have succeeded in completing the quest recommend you have an outside group to help kill it. The dragon has been soloed, however, with, for example, a 70 level necromancer.
To spawn the young dragon if his timer is ready: Go the entrance of the Halls of Fate at ( -2, -375, -31 ) /waypoint -2.3, -375, -31. The young dragon will spawn down near where you picked up the cog earlier, and slowly fly up to his perch on the Halls of Fate building (takes about 5 minutes).
Suggestion: Keep your group at bottom of the stairs at the entrance into Halls of Fate building. Have one group member with the quest go and spawn the dragon, then run back. When the young dragon reaches its perch just above entrance, have your tank walk out and pull the young dragon inside and down to the doorway at the bottom of the stairs. The walls and ceiling surrounding the staircase will prevent you from being knocked around too far.
Return to Gimdimble Fizzwoddle. Equip the cap he gives you first with +200 safefall, then use the rocket pack that he also gave you. After a short ride straight-up and a long fall down, go speak to Gimdimble again for your reward.