I have the Luna branded geared hub: https://lunacycle.com/geared-hub-ebike-kit-750w-for-front-or-rear/ on the rear of my bike. I'd like to disassemble it to check the gears and add some grease. When I take out the screws and pull off the cover on the freewheel side, I see all the electronic parts. The side with the gears does not come off, at least not easily. I didn't want to pry on anything until I knew I wasn't going to do any damage. Is the cover pressed on or is it simply the force of the magnets holding it in place? Anything important to know before I dive in? Any idea of what brand this hub actually is? Thanks for any help!