Like Ian B, I have had issues with the v3 film holders leaving gouges in the film emulsion. I spent quite some time recently to sand the corners and edges of each film holder clip to remove any sharp corners and burrs. The issue improved somewhat, but it remained. If I scan the film, I can easily fix these problems with the healing tool, but analog printing in the darkroom would be challenging, to say the least. On a lark this morning, I tried my v1 holders (the solid ones) and not a single mark!!
I have a theory about why the v1 holders may work better for me vs the v3 holders... The long empty slots behind the film allow too much turbulence during agitation cycles, thereby pushing/rubbing the emulsion against those clips. Whereas the original v1 holders allow agitation only along the surface of the film with very little motion along the base side. Since I'm using the same development technique in each case, the holders seem to be the only variable.
Hmm.................
I have a theory about why the v1 holders may work better for me vs the v3 holders... The long empty slots behind the film allow too much turbulence during agitation cycles, thereby pushing/rubbing the emulsion against those clips. Whereas the original v1 holders allow agitation only along the surface of the film with very little motion along the base side. Since I'm using the same development technique in each case, the holders seem to be the only variable.
Hmm.................