With those hubs, the old oil gets gunked up and needs some time to loosen up. I like liquid wrench, it seems to dissolve the old stuff quick and get all the parts going again. Once it's freed up, I use regular or synthetic motor oil, 30 weight, to lube the hub. I put plenty of it in the oil port and add it down the axle where the shift pin or little shift chain goes. It gets messy, but gets it freed up. That hub doesn't have a lot of braking surface, the brakes never were that great from the beginning. I just put one foot under the opposite pedal and pull up for extra braking power.