Did you case match?
I have the same kit, case matched. Treats hi comp head. I did not raise my cylinder. I installed it as it came. Dellorto PHBG 21, techno boss pipe. Stock clutch with kickstart springs, 2.5 turns in from flush. Timing 14* BTDC. 16 x 45. Eats hills, and does 45 easy.
You’re not tuned/ timed right. Do what was suggested, and spend some time in the Wiki learning how to tune your moped.