Curve OFFSET direction

Hi, I have serveral issues with offset function in grasshopper. I use standard and putterfish offsets.
Fistly, is there away to offset all the curves into one direction, but several curves in different? How to cull them? I need to change the inside letter curve here.

And secondly, why the outer offset chamfers?? In component I leave everything to stock. How to normalise it, because as I try to change anything, nothing happens.



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