Steel Soldiers now has a few new forums, read more about it at: New Munitions Forums!
Microsoft MSN, Live, Hotmail, Outlook email users may not be receiving emails. We are working to resolve this issue. Please add support@steelsoldiers.com to your trusted contacts.
I had fun researching this one (new to me). Looks like you have a "code G" pump without the FDC. Basically you'd need to remove the cover and do your adjustments there, see the following for more info:
TM 9-2910-226-34
page 3-105...