Hi Simon I’ve looked at my bike with NC 35 forks in and I was muddled up with fitting HRC Magtek they use two large spacers , the NC 35 uses a pair on the o/s and a thicker Nsr on the ns
I will get you the overall thickness for the o/s next time I got the wheel out,
Jonmac .pm me your email and I will forward you some pics I can’t get them to work on here