first off all ,welcome here
u find the right home
you,re bike is excellent with that single swinger ,
also its plated witch is pretty need
mine ,s plated too and that provides tons of fun riding in the city
for yor problems i would say,
give it a new plug the correct one if not so
mix it 1to40 with quality mix mines astrol R2
check carb clean it make a good jetting
it seems that she,s not burning the gas al the way