Old Rf's with Roll film backs

[f16sunshine]

Hi All
I have started using an old Plaubel Makina IIs . I have one roll film back that is light tight and Fully functional. My question is. Has anyone come up with an easy fix for the difference in 120 backing paper old vs new (Thicker vs thinner)? The frame spacing is overlapping starting slightly bad and then getting worse. The only thing I can come up with is that the paper used to be much thicker vs now. Maybe the film was thicker as well. Any advise? Has anyone tried making a thinner/smaller take up side spool or some other trick? Thanks in advance for sharing your experience.

Oops wrong forum. Mod could please move thnx.