Have you checked the idle adjustment.

After cleaning my carbs I couldnt get the bike to kick over.

I checked the spark, fuel etc and just before I lost my sense of humour after 1/2 Hr of kicking it, I rechecked the idle setting, gave it a couple of turns and it fired first kick.

May not be the solution to your problem but it may of interest to others who have similar problems and go looking for less obvious faults
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Russ

MC21SP