Semcycle bearings, problems?!?

Hey

I bought a Semcycle Standard uni this summer and I have had a lot of fun with
it. This week I managed to go backwards in a figure of eight for the very first
time. I can tell you I were very pleased.

I have a question about the bearings. Being a very expensive uni they should be
good. But if I hold the uni up side down and spin the wheel, I can feel some
strange vibration from the bearings and the wheel comes to a rather quick stop.

Anyone else with a Semcycle with bearing problems? Or is a Semcycle supposed to
function without these kind of problems?

Should the wheel spin without vibrations from the bearings and should the wheel
spin with a very slow retardation?

(I have been riding indoor all the time.)

Karl Sitell