No throttle, seriously??? Are you not aware of the throttle Cox sells for the Sure Start? They were introduced almost three years ago. No offense but where have you been as they have been discussed all over this forum?
1) Here is the link to Cox Engines Sure Start throttle:
http://coxengines.ca/throttle-conver...49-engine.html
2) Here is a link to a You Tube video showing the throttle installation:
http://www.youtube.com/watch?v=pvpmLy0ToYE
3) Here is a link to a You tube video showing the running engine with the throttle:
http://www.youtube.com/watch?v=Iq_Q1ODC8Ko
Check these out as the throttle conversion is only $14.95.
Good luck!