is the clutch dragging as you should be able to start it on tick over,,,
this is how i start my lite heli ( except mine is a german type )
i put the tranny stick at tickover put the glo pug on then put the starter to the starter pinion then as it turns i quickly just put my finger over the airintake of the motor ( perhaps for less then a second ) which primes the motor enough to start it ... it works quite quickly if every thing is working as it should ( like charged glo battery ect ect )