X-Pro (Zuumav) Storm 150 DLX

[Soup-n-sandwich]

Hi guys,
I was curious if anyone has disassembled the fork of an X-Pro Storm 150 DLX. The goal is to get to the valve stack to increase the flow of oil to speed up the rebound and compression dampening. I swapped out the factory oil with ATF and this helped but it's not quite enough.



When I removed the fork lowers from the stanchion tube there is what looks like a removable cap with spanner wrench dimples, but the more I looked at it, the more I'm starting to think that it's simply a grove and not a seam. I can't see how the damper rods come out of the lower fork stanchion. Have any of you successfully taken apart the USD fork on this bike or a similar bike?
Thanks guys
C