Hi. I'm new to this hobby and I've been reading stuff on this forum. I recently purchased an HL Leo2A6 and got a metal gearbox for it. IIRC, the gears in that gearbox is black, not gray. Much reading here tells me this is an all-steel gearbox, yes? Second, I want to know what kind of motors that came with this gearbox. I am still unfamiliar with the terms 380, 400, 440, etc. WRT motors. What motors are in this all-steel gearbox? I've been seeing on eBay and RC tank online shops of a red gearbox dubbed Ultimate Gearbox. Other than the gears being steel, what exactly does this mean? Thank you.