[coolhandcountry]

Is your washers to thick and are they used for spacing the bearing in the center. You shouldn't be able to hold the wheel and turn the spur by hand. If the washers are hitting instead of the pads this may explain things.

As for removing the grease. When the slipper gets warm and spin around at about 10,000rpm the grease in it becomes thinner. It eases out and onto the pads. The pads and grease don't work well together. Inturn you will have a melt down of the other slipper pad cause it will have all the friction on it. Hope this helps.