Hello eveyone,
we're running an RN2150 in B4 format. Its now getting harder to source real OEM masters for our model and we have recently experimented with using master rolls from different models (so far the CR masters work, although we often get some wrinkles on the master when its put on the drum).
We've tried using compatible masters from PRC but they are noticeably inferior in print quality.

Can anyone tell me which models would have master rolls (in B4 format) that would fit in our machine?
The CR master rolls we tried, for example differ only by a slightly larger diameter cardboard tube, so they still work well.

Does anyone know which other models have B4 master rolls we could try?

Thanks for any info!