thanks!

Yes, I tried all that but it still brakes!
But I found out the more you offset the more CVs will be added to offseted curve,and more lofted geometry will be acting weard until it brakes up completly!

Is maybe the reason becaouse I made thoese sharp corners with 3CVs in the exact same place with snap tool?

If it cant be done with curves, can I offset somehow with polys!