I am a newbie using Mach3 and one of my first test was to draw a circle on AutoCad and exported it as DXF  R12 file  to LazyCam  and after I Gcode it the circle was turned into a deformed circle. I have been trying to find something alike on the forum to this problem and I haven’t found it. Please, someone that could help me fix this problem. Thanks in advance, Andrew.
Here is the code.

N1 (File CircleTest )
N2 (Default Mill Post)
N3 (File Posted in Mill Mode)
N4 (Sunday, May 06, 2007)
N5 G90 G80 G40 G91.1
N6 G0  Z0.0000
N7  X0.9027  Y0.1980
N8  Z0.1000
N9 M3
N10 G1  Z-0.1000  F1.00
N11 G2  X2.5012  Y0.9992  I0.5985  J0.8012
N12  X0.9027  Y0.1980  I-1.0000  J0.0000
N13 G0  Z0.0000
N14 M5 M9
N15 X0.0 Y0.0
N16 G40 G80
M30

Looks fine here

Another noob here as well. Eating my NoobCakes here. I did not load your data. But did the same thing in Rhino. Circle with 1 diameter, into LazyCam, into Mach3, into foam. No problems.
My file however, showed plasma mode... Probably because I simply 'ran' through the conversion not looking left or right.
Cheers
Lemo

I am sorry to jump into conclusion that fast. The LazyCam  is perfect and I apologize for  that. I wrote a gcode myself for a circle and got the same deformed cut. I checked the machine and it was loosing steps, something never happen before. I did some adjustment here and there and I got it working perfect. Thanks and forgive me for my mistake. Andrew.   

Glad you got it straightened out. 

Brett