i am navigation the first three vipassana jhanas with relative ease

for entering a stage which seems to me the beginning of the first samatha jhana i start with this sequence
1) focus on on kasina, e.g. a candle flame
2) i notice holding on to it
3) this holding on is being let go of automatically at some point, eye focus widens, concentration is "easier"
4) now if i excert some effort to bring the eye focus back to the middle of the flame piti arises from the lower part of my body
5) taking piti as a concentration object it is getting very strong
so this is would be the entrance to the first jhana for me
i guess the second samatha-jhana would reveal itself by concentrating on the piti-sukha of an a&p
i just had problems to figure out something nice in the dukkha nanas to focus on, so that is why i asked the original question