I don't use Surfcam, but I use GibbsCAM and our Posthaste posting option is also created by Ground Support, who makes your Surfcam post.
You need to add 88 to the coolant command.
Also, make sure the notes/descriptions that follow each line is separated by two or more spaces. In the copy of your template you have no spaces:
Coolant 8 9 7 61 62 63 64 88 - need spaces here- #Flood, Off, Mist and Thru Spindle M codes