[TX_Dj]

As long as the throttle isn't stuck such that you're pegging the redline without a load, keep in mind you can use your friction zone to regulate your speed... and of course the killswitch to shut 'er down when needed.

If you're getting that much water in there, I'll bet rust is contributing factor inside the cable housing. May be a good idea to buy/build new cables, and really thoroughly fill them with heavy grease with some manner of injection method.

Are you sure it was actually the cables causing the problem, and not water inside the throttle mechanism itself, or water/ice around the cam on the carb-end of the cable?