Swaging questions

[arenyi]

I am going to order a new set of standing rig for my Bavaria 1060.
I plan to dismantle the shrouds one-by-one and order exactly the same length then the old (six years old) one. Is this correct, or the new shroud should be a bit shorter?
Is it necessary to fill the terminals (before the swaging) by silicon or other material to prevent corrosion? What is the recommended material?