Screwed up again! Gcode

I was in the middle of a long carve when I had a problem and had to restart the machine. I do not want to start at the beginning of the file again as I had carved to line 13908. How do I edit the code so that it will start a few lines before? I am using a Onefinity machine. Hope someone can help.
i tried to attach the file, but it is too big. This is the header, Its all double Dutch to me!
%
(VECTRIC POST REVISION)
(14915DE88D57FEB54FDB7F235745EEBE)
T3
G0 G17 G20 G90 G40 G49 G64 P0.0001
G0Z1.5000
G0X0.0000Y0.0000
M3 S12000
M0(MSG, Click ‘Continue’ when the spindle is up to speed)
G0X0.1116Y-15.8475Z0.2000
G1Z-0.1000F50.0
G1X0.0705F140.0
G1X-0.2776Y-15.8432
G1X-0.3116Y-15.8424
G1X-0.6476Y-15.8303

This is where it stopped the bottom line is the stop point but i want to start before it started to arc

1X-0.9707Y15.7964
G1X-0.9911Y15.7952
G1X-1.1427Y15.7852
G1X-1.1615Y15.7838
G1X-1.3172Y15.7714
G1X-1.3431Y15.7691
G1X-1.6642Y15.7378
G1X-1.6961Y15.7343
G1X-2.0258Y15.6947
G1X-2.0560Y15.6908
G1X-2.3891Y15.6436
G1X-2.4192Y15.6390
G1X-2.7505Y15.5849
G1X-2.7817Y15.5795
G1X-3.1060Y15.5192
G1X-3.1311Y15.5143
G1X-3.2890Y15.4820
G1X-3.3070Y15.4782
G1X-3.4611Y15.4446
G1X-3.4815Y15.4400
G1X-3.7053Y15.3879
G1X-3.7272Y15.3826