Your highlighted extract refers to Rotomo" single bar rear axle Paul...
Your axles will require just the ONE Circlip grove for each of the 4 axle ends. Just copy your own/samples to clarify distance:)
Make sure you cut them a little longer and fit the wheel for test, then face the ends when your happy, as occasionally you can lose a few mm on wheel and dust cap variances and axle bar thickness.
And....DONT forget to put up a pic for us, lols:)
