With respect to bevel gears, when you said, "I also soak mine in some Paragon Ultralon for lubrication," I assume you soak them after they have boiled. I'd like to boil my gears too when the kit arrives to extend their life and make the diff run smoother. Based on your experience, how long is too long when boiling them? Is there a way to tell when they are 'done'? I looked at the ceramic balls from HPI, they come in a 12 pack. How many were required for both the front and rear differential?