Old 6 bolt rotors had spacers behind, any for centrelock?

Changing my knackered wheel. The new wheel has centrelock rotors. The old one had 6 bolt rotors with spacers behind to line up to the calipers.

Are there spacers available for centrelock hubs or do I have to resort to judder prone frame – caliper shimming?

Its an On-one 29er btw.

you shouldn’t need to space your disks, just the calipers themselves

Prob worth starting from scratch with the caliper alignment if the disc isnt in the centre of the caliper.