Z1OwnersClub GB

I asked this question on here before but forgotten on what part of the forum
I intend fitting a set of Z1000H mag wheels to My Z1000A2
The spacer between the brake caliper needs to be wider
Can anyone give Me its dimensions please

35.5mm
(always good if you can get somebody else to confirm / agree but this size should be correct I believe)
On the odd occasions in years past I've found the odd c. 0.5mm thick washer fitted in this position just to get the disc centralised in the calliper slot but we're talking 45 year old bikes / mixtures of components !