I haven't actually looked at your specific system however something you might try. Place the top bunk in the original lower position and then try to raise it and see if it doesn't go all the way up. This is a wag on my part good luck let the forum know how things work out.
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Retired Navy
Jake my sidekick (yellow Lab) 10/04 - 05/20
2017 RAM 2500 CC 4X4 Cummins Diesel
2016 Flagstaff 26 FKWS
AF&AM & El Korah Shrine of Idaho
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