Sweeps wont cut through window with "cuttable" on

[maxineo5671]

So I'm relatively new with Revit and just found out how to create sweeps. I was able to move them around to where they aren't showing over the smaller windows trims but for some reason, they are going through the big window when "cuttable" is turned on. When its turned off however, it cuts through just fine, but then there is a gap between the sweeps and the edge of the windows. I've tried creating an opening in the big window but for some reason it wont allow me to and I've tried adding a void but that doesn't do anything. Any help is greatly appreciated. 🙂

[ToanDN]

You can use reveals instead of sweeps and they guarantee to always cut.

[barthbradley]

setback?