Change thickness of Versaworks margin marks

[Mysticalvibes]

Hi, Is anyone aware of any way to change the thickness of the margin marks that Versaworks prints? On occasion I have to print 8x4 sheets of numbers which have a white background. To save the number of cuts needed and to squeeze more into a sheet I add margin marks. The lines however laid down by Versaworks are much thicker than needed and tend to show at the edges. I've attached a pic to show what I mean

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[Mysticalvibes]

Here's the marks I'm talking about.