Solid Surface offset direction discrepancy

Grasshopper
1

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Hey internet,

I’m trying to add straight portions on the ends of these sweeps, and I like the result on the right, but not on the left-- as the straight portion goes in the opposite direction, into the part. I thought it may be something to do with the direction of the trimmed surfaces, but they appear to have the same direction. Any help would be great!

Thank you kindly!

2

difficult to say without having a file to check
you can try a [deconstruct brep + brep join] and apply the extrude to these newly re-joined breps to see if the result changes