My sister has this frame and also got it used. The tracks were pieced instead of continuous. She contacted the comp. and ordered the continuous track and it made a world of difference. No more jurking at the joints of the track. She still uses the original carriage. It is a plastic one, not the wood one. When the track came, it was rolled up. When she reduced her frame to Queen, and went to put on the track for that size, it broke and the Grace company replaced it.