XJet

I think Hitec advises against the use of Karbonite-geared servoes on gassers -- the vibration levels are too high.

Karbonite is a bit like glass -- really strong but also very brittle. Just as glass can take an immense strain, so can Karbonite. However, just as a very light tap in the right place with a hammer can shatter glass into a million pieces -- so it is with Karbonite.

Think of Karbonite as a stronger (but not tougher) form of nylon -- not as a replacement for metal.

Right now, the only servos I use on a gasser are the HS5995TG. They're *strong*, light, fast, have gears that just never seem to wear out, and are under $100 a pop if you hunt hard enough. Yeah, $100 sounds a lot -- but you can often use 1 5995TG where you'd need two conventional servos (on larger birds) and unlike regular metal-geared servos, you won't have to spend a third the original purchase price on new gears every season or two.