I am having the same issue. It really has nothing to do with thicker marks or filled in. It has to do with the cutter not knowing it's looking for intermediate crop marks. You'd think that because you made the crop mark in Finecut8 That this info would be sent to the cutter and the cutter would know what it's looking for. Another problem is the initial time you put the vinyl in the cutter and it looks for the crop marks the first time. It's again only looking for the 4 crop marks if your cutter panel is set up for 4 crop marks. But there is no way to set up the cutter panel to look for intermediate crop marks. This feature was published about maybe 3-4 yrs ago. I have to do a partial wrap next week and my graphic is 48" x 210". I thought I'd practice with this function on 4ft length prints. It failed ever time. The logic is missing. I called my dealer at AGS and they had no clue, I called Mimaki USA and was on the phone for 1 hr and they had no clue either. Then I spoke to a Mimaki Tech guy on Monday and said he would call me on Tuesday. He so far hasn't called back yet. This feature with what I have, latest SR3 cutter, FineCut 8 does not work. The cutter finds crop marks 1 and 2, then when it finds the third one, it thinks it's looking for the forth one and moves to the right, but gets tangled in the graphic and returns back to home. If the cutter knew it was looking for aka "Intermediate Crop Marks", then we would not have this issue. I posted this same question a week ago, with over 60 views, but know one knows either. I guess having a nice 61" new cutter I will have to hand cut my graphic in this day an age. I have a Summa D75 and this thing reads all the crop marks you throw at it and it's so automatic. A night and day difference working with it and producing work. If you see this Mimaki my case number is CAS-39397. Thank you.