Why didn't you buy the current kit (25284-11) instead of a NOS kit? That kit has the high-volume oil pump. But the number they give is 62400001.
Did you look on the Harley Davidson website for the pertinent information? https://serviceinfo.harley-davidson.com/sip/service/document/240433?locale=en_US
I found a thread on another Forum where they talk about this very subject. You might try searching the internet, not just this Forum, for the part number of the kit you bought and the number for the newer kit. You'll probably get a hit for the same thread. I don't know if I am allowed to give a link to another Forum.
Did you look on the Harley Davidson website for the pertinent information? https://serviceinfo.harley-davidson.com/sip/service/document/240433?locale=en_US
I found a thread on another Forum where they talk about this very subject. You might try searching the internet, not just this Forum, for the part number of the kit you bought and the number for the newer kit. You'll probably get a hit for the same thread. I don't know if I am allowed to give a link to another Forum.