Even though Genesis Star Interstellar discourages unauthorized tampering with all of their products, it didn't stop the tinkering miner Bubba Backhammer. His philosophy is that all tools can be adjusted for more efficient use, and if you have it in your inventory you can do whatever you want with it, much to the general displeasure of most product manufacturers. Old Bubba has made himself a name on Calypso, not as a miner but as a makeshift engineer, and his adjusted extractors are considered valuable finds these days.
While the skill learning bonus ends at profession level 21, it requires a bit more than level 22 to max uses per minute.
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This item has been reported to drop from these creatures.