In the absence of the "scoop"

Let's just start from scratch.

*re-read the instructions.
*Fresh fuel
*charged glo starter.

*Open the main needle valve 2 or 3 turns
*set the throttle so it is just slightly open.

Start the motor...leave the glo starter attached.

Advance the throttle to full....and SLOWLY turn in the main needle valve until you hear a definite pitch change in the sound of the engine...it'll go from a rough 4C operation to a "scream".

STOP RIGHT AT THAT POINT...DON'T LEAN IT ANOTHER CLICK.

Allow the motor to run at the richest (most open) needle valve setting that will keep it screaming. Make this adjustment with the throttle WIDE OPEN.

Allow the motor to run for about a minute. Stop it by closing the throttle...don't pull the fuel line or anything else.

Allow the motor to cool completely...then run the motor again (needle should be OK)

Repeat the run/cool process 8-10 times. I don't care who doesn't like it...it's the right way to do it.

After this...extend the running time a bit and lean the needle a bit more. If the motor "sags" (ie: loses power) you've gone too lean...richen it back up right away!

When the engine will hold a fulll song scream for a minute or so...go fly. Keep the needle set 2-300 rpm below peak and you should be fine.