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Utrak doesn't move straight.
AndyWarne:
--- Quote from: monkey puzzle on February 11, 2012, 08:14:21 pm ---Ok thanks, I'll give it some time.
I wonder what it is that actually "breaks in". Is it the bearings maybe?
--- End quote ---
Its the stainless steel rollers. At first they have microscopic machining marks on the surface. These are accentuated after a few minues use, at the point of contact with the ball, but after a longer time, maybe 30 minutes of use, the marks wear down to a smooth, slightly dished curved groove in the rollers.