The big screw (highspeed needle valve) needs to be turned out 4 turns
the one on the side of the carb is a lowspeed. it needs to be flush. It sounds like the car is too rich or the motor is worn out. Try the stock settings above and check your glowplug these are the two most common problems. I hope this helps if you have anymore questions you can reach me on here.
Aaron and W-hobbies