Problem to dont hide lines in drafting

[RSilva]

Hello

I have a drafting (img6) with holes (img2) and i just want to see the silhouettes of that holes and not the edges (img3) but when i disable (img5), hide the edges of the holes but hide 1 more line of an radius that is necessary (img4)
What can i do to dont have this problem?

img1

http://files.engineering.com/getfile.aspx?folder=f406c4ef-c0c8-4672-a125-e5f5625158d4&file=img1.png

img2

http://files.engineering.com/getfile.aspx?folder=a7318b42-cd7f-4291-ad63-0ef8fc734a95&file=img2.png

img3

http://files.engineering.com/getfile.aspx?folder=94af0356-d8d6-48dc-9bb6-26a97639ad8e&file=img3.png

img4

http://files.engineering.com/getfile.aspx?folder=248083ea-b123-44c5-9f9d-2ff69b1a7567&file=img4.png

img5

http://files.engineering.com/getfile.aspx?folder=e1c7c630-e1f8-427d-be9d-3aa2e9e437e2&file=img5.png

img6

http://files.engineering.com/getfile.aspx?folder=b47116cf-9821-4b54-b8f0-aea6e21fe1f2&file=img6.png