I have a Puch Maxi with a ZA50, I've installed the K-star kit, 70cc high compression head, 15mm bing carb, techno boss exhaust.
I haven't changed the spark plug (currently ngk b6hs). And the current gap for my points are .016" at TDC.
My problem is that the kit is extremely slow, much slower than stock. I think its the clutch or gearing but I honestly have no idea at this point. When I ride it, it switches almost immediately to second gear. Also First gear is much more responsive and once it switches to second, its slow to accelerate to top speed on a straight.
I try not to ride hills right now during break in, but I've noticed the bike can't even take a hill with out me getting close to wide open throttle versus stock, I could take the hills with a lot more ease. Seems odd but I could use some help, advice, set-up tips ideas etc...