后处理修改的疑问!

这个是我修改后的程序,怎么第一把刀后面没有预备刀,而到第2把刀就有预备刀了(但是预备刀不对,不是下个程序段的刀具!)
%
O0000
(PROGRAM NAME - LID)
(DATE, Day-Month-Year - 18-03-06   TIME, Hr:Min - 15:37)
G20
G0G17G40G49G80G90
(2.5 FACE MILL TOOL - 14 DIA. OFF. - 114 LEN. - 14 DIA. - 2.5)
(MILL FACE)
T14M6
G0G90G54X3.7723Y-1.005S4000M3
G43H14Z.25M8T1
Z.15
G1Z0.F10.
X-1.5F25.
Z.1F40.
G0Z.25
M5
G91G28Z0.M9
M01
(1/2 DRILL TOOL - 1 DIA. OFF. - 0 LEN. - 1 DIA. - .5)
(DRILL CENTER)
T1M6
T1
G0G90G54X1.0373Y-1.005S2000M3
G43H1Z.1M8T15
G99G83Z-.75R.1Q.06F15.
G80
M5
G91G0G28Z0.M9
M01

这是我们公司的程序,怎么样才能修改成这样的格式啊???
有几个地方不一样,
1,有刀具清单
2,有预备刀
3,每个程序前面有G0G90G40G80G49Z0M9
4,N代码只在换刀的地方才会出现,而且是递增
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(SHS, 8-30-05)
(OP#1, PREPS THE BODY FOR THE FIXTURE)
(RAW SIZE; X=2.0, Y=2.0, Z=.260 )
(SET ON G54)
(T6=3/32 DRILL)
(T11=1/4 X 82 C/SINK)
(T18=1/16 DRILL)
(CSINK_MOUNT_HOLE)
N1G0G90G40G80G49Z0M9
M1
T11M6
T6
S5000M3
G54G0X1.9Y-1.9
G43H11Z0.1
M7
G98G82X1.9Y-1.9Z-0.0598R0.01P100F20.
Y-0.1
X0.1
Y-1.9
(CSINK_ALLIGN_HOLE)
X0.1Y-1.Z-0.0403
X1.9
(DRILL_MOUNT_HOLE)
N2G0G90G40G80G49Z0M9
M1
T6M6
T18
S7000M3
G54G0X1.9Y-1.9
G43H6Z0.1
M7
G98G83X1.9Y-1.9Z-0.2869Q0.1R0.01F40.
Y-0.1
X0.1
Y-1.9
(DRILL_ALLIGN_HOLE)
N3G0G90G40G80G49Z0M9