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'll pile on with the carby float adjustment, and add an extremely long shot: If the fuel tank is not venting, that could be a source of fuel starvation. You might try simply removing the fuel cap and running the engine to test this possible issue.