RE: Hitec "Karbonite" servo's
Mike Mayberry from Hitec mentioned in another thread that they had discovered that the screws should extend 2mm farther into the output shaft past the spline on the Karbonite geared servos. Hitec will have some replacement screws available in the near future for those that want to change them out.
The stock screws are 2.6mm x 8mm I believe. If your going looking make sure you do not use anything longer than 10mm. These screws are most likely available in the RC car department at your LHS. All of the imported cars use these range of screws...
I have several of the 5975HB's on throttle in my 40% models, so far no problems.