This might sound odd, but how are you trying to kick the bike over?
The best way is to be right over the bike as if your balancing, so a bike stand under the skid pan is the ideal way for me initially.
That way I can let it warm up before i ride, and minimise clutch drag.
If your one foot on the floor like a conventional bike, the angles are all wrong with a Beta and it is a lot harder.
I'm used to mine now, and It gets easier.
I can pretty much start it first kick from most any angle.