change the plug it does not cost much and as you told after cleaning dus dus finished
so Umer bhai definitely seems plug is weak of your bike
atlas honda recommend spark plug change after 11000km we should assume same for chonda's
but its mostly seen plug easily cross this mileage but i guess one should plug at this mileage
as brand new plug will give better spark and spark plug are not much costy for cd70 or chonda