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Thought I would show you guys how I can fix anything if I want to bad enough. This is a O.S 105 HZR from Horizon Hobby. I decided to pull out some old nitro Helis. This old Align 700xn is a heavy old girl but still flies. I can tune the engine for the next flights. But you can see it runs well. I’ll add a little more headspeed later too. Check out Horizon Hobby for everything RC. Please buy from my affiliate link to help this channel.