No blocks. Open side...stationary side?
Terry
"Rudy" wrote in message
...

"Terry Cano" wrote in message
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I took out the sliding door....replaced the wheels and can't get
the door back in with both sets of wheels.

Are you trying to get it into place in the "closed" position or in the
center ? There are often blocks in the top of the track to keep it from
being 'lifted'
If so, try putting it in/up over on the "open" side.