I got rid of the blob by editing the G code scripts. The culprit was the following line of G code:

G1 X110 Y-70 E25 F300 ; purge nozzle

But now, I want to add a line to my Simplify3D scripts tab that draws a line in the front of the build platform, left to right to purge the nozzle prior to the start of each print.
Can any one help with the G code I need to make my FlashForge draw a line prior to every print? Thanks.