To stop the rotation of the C.M.B throttle connection ball modify the carburetor as follows:
Click on the small pictures to enlarge

	First remove the carburetor from the engine and remove the four top hexagon screws!
	Now remove the flat slide!
	Now remove the pin bar that was in the slot of the flat slide. Remove the connection ball at the end of the pin. Make it warm to remove it more easily as the it was mounted with heavy duty thread lock in the factory!
	In this example I used an old Mugen shockshaft.
	Make the shaft the same length as the original one and cut it with a high speed tool like a Dremel. Now make with the same tool at each side (2 m/m from the end) a groove that is as deep as the original ones. Do not make it the same way (round) as the original groove in the old pin!
	Be sure the grooves are the same in depth at both sides otherwise it will prevent smooth operation of the new modified pin. Now place the modified pin in the carburator and replace the flat slide. Be sure the lower needle is in the slot too! Test if the pin is moving without any hick up with the venturi top plate mounted.
	Apply some silicone sealant on the white marked spots.  Do not put to much sealant on as this can cause the flat slide to block.
	Take a normal elastic thin rubber band and pull it in the grooves at both ends of the venturi top plate. Then press the venturi top plate downwards so the rubber band is trapped.
	Then place the four screws and tighten them one by one little by little in a square. When the venturi top plate is fixed you can cut off and remove the remaining rubber band.
	The connection ball can now be re-used and secured at the end by turning it on the thread.  Secure it with "heavy duty" thread lock.
	This is the modified ball installed in the car. By choosing the right angle the problems with rotating are gone!

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