User blog comment:Kitahara/Recording drum expedition success rates/@comment-25779449-20150117021945/@comment-25832576-20150117221843

Ohh silly me, I thought you asked because you wanted to try a different level team and see if the results were different, oops! Its up to you if you want to go for a similar or different level fleet really. Since my exp 37/38 team is essentially the same, minus a flagship swap and adding/removing drums, I can test if flagship level possibly makes an impact without doing anything extra, although I'm not sure if my results alone could make anything conclusive regarding that.

I used 5 ships for exp 21, with 1 drum equipped on 3 ships (minimum req). For exp 37, 1 drum equipped on 4 ships. For exp 38, 1 drum equipped on two ships, and 3 drums equipped on another two (I really doubt placement matters, but I'm just adding this here in case you're wondering)