Here are some question for you airplane owners and mechanics. Do you have a time in service limit for your primary control cables? Would you ever recommend replacing them even if there was no fraying or corrosion? And on Cessnas (or any common airplane you have or work on) are there known trouble spots on any of the cables that could get easily missed on inspection? And do you agree that galvanized is generally better than stainless except in corrosive environments? I hope these aren't ignorant questions. I'm trying to cheat the system and learn without having a close call or worse.