got some new alloy bits in purple on the way to me

i went for rear knuckles
front knuckles and C hubs

i am really concerned about blowing the diff. ive trawled through this thread and there is a lot of mentioned on shimming the differ properly. does this meaning the orange coloured shims until there is no side to side play in the diff. The build up manual states there should me 1mm side to side play.

ive brought a spare 86336 for when the diff does blow but want to minimize the chance of this as much as possible