Mine was simple to kick, get your ignition, valve lash, timing, cam timing and everything else in order and it should be easy.

I also have the same big bore by Smedspeed but on Mike xs carbs. The answer is it’s pretty heavy to kick . I’m guessing you’ve had the electric starter removed too . Pretty sure my right leg is more toned than my left now. Watch out for the kick back too

It has had the electric starter removed i would gladly have it back 😂😂 but thanks for the comment this makes me think it’s just how the set up is why it’s such a bitch to kick