anyone know how to clear off set.
I have been fighting with this for hours. Can not get them clear
the gcode start then the first then the mill does is Z axis goes up. resets the zero height and cuts air.

If i delete everything before
N190(Toolpath:- heading)
i runs fine cut height is correct. any suggestions
 

first few lines of gcode are as follows

N190(Toolpath:- heading)

( 1srpokerrun60 )
( File created: Wednesday, September 22, 2010 - 10:56 PM)
( for Mach2/3 from Vectric )
( Material Size)
( X= 5.500, Y= 7.000, Z= 0.250)
()
(Toolpaths used in this file:)
(heading)
(cards)
(Lower Text)
(logo)
(Tools used in this file: )
(1 = V-Bit {60 deg 0.5 inches})
N130G00G20G17G90G40G49G80
N140G70G91.1
N150T1M06
N160 (V-Bit {60 deg 0.5 inches})
N170G00G43Z0.8000H1
N180S16000M03
N190(Toolpath:- heading)
N200()
N210G94
N220X0.0000Y0.0000F85.0
N230G00X1.1627Y6.0079Z0.2000
N240G1Z-0.0488F30.0
N250G1X1.1519Y6.0002Z-0.0355F85.0
N260G1X1.1443Y5.9963Z-0.0286
N270G1X1.1377Y5.9941Z-0.0249

Sounds like you have a height offset in your tool table for tool 1 and when Line N170 calls the offset it changes things. Change the height offset in the tool table to zero and you should be fine.
Hood