There are alot of people that have never handled a Kraken that say it needs this and that and that. Sure, it may help, but I don't really touch gearboxes unless I have to. My stock Cyma gearbox (older 300fps version) ran perfect for several thousand rounds till I opened it to upgrade, and now it still runs perfect at 400fps+. My Kraken came with the newer "pre upgraded" Cyma gearbox, and it clocked 360fps outta the box. Runs great.
Quality control - that might cause one of these to have premature failure once in a while (not very common it seems), and that might cause some bad reports on these, but overall they are great stock. Sure it has plastic bushings, thick grease, and possibly imperfect shimming (although my older Cyma gearbox had no signs of bad shimming via gearbox markings from the gears what so ever), but it works.
Just my .2 cents.
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