We took the hard top off of my moms 300SL today but ran into a problem when we tried to put the soft top up. The arms on the passenger side that come up to support itmust not have been aligned properly and broke the metal part that goes around right behind the door where all of that comes up. It is the part that is supposed to bend and open and stay open seen from inside the car while the hard top is up. Its not the large cover in the back. Does anyone have a part number for this need it ASAP thanks.

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W126 1983 300SD 286,000 miles and ticking
Baby blue exterior Grey MB tex
Recent work:
Replaced air cleaner mounting brackets and heat shields
Replaced alternator, fan and power steering belts
Replaced positive battery terminal
Replaced negative battery terminal and cord
New Duralast Battery

My car needs work.