I just tried using Inkscape, and it's great program
However, I need to do contour (CDR command) on an object, and just can't make so I joined this forum for help
I guess answer is simple, as this is driving me to nowhere, but than this is my first day actually working in Inkscape
For the purpose of contour I use inset, but object got heavily deformed in the process (and making it to path just results the same)
I'm working on more complex object, but here is inset/outset sample on circle i.e. (source black in the middle and inset/outsets are red, if it's not too obvious):

So, I want to ask, am I using wrong command or there is some hidden setting that I can not find?
Thanks