New curtains source for zorki

i recently bought some etone shutter curtain to replace the old ones in my zorki3.
I noticed because the etone curtains are only 0.15mm at speed 1/1000 the curtain dosent create a gap, i had to make the drum thicker by adding extra curtain material.
now the gap for 1/1000 at the begin of the travel is about ~1,2mm and at the end ~3,4mm.

So im looking for a better source for zorki curtains since the last post discussing is already over a decade old.

I buy my shutter clothes at nobbysparrow on ebay, he has clothes that are 0.2mm. And instead of making the drum thicker you can change the position of the curtain on the big drum. Only 1mm makes a big difference.

Ulrich