Like an idiot, I tried to "adjust" mine, and broke one of the posts off. RATS.
You might try this eBay seller.In their ad, they do indicate to send them a Message for any part needed that is not showcased in the ad.https://www.ebay.com/itm/166290486759?itmmeta=01HRTMSP29YSE36KVY33WP4DKK&hash=item26b7af75e7:g:-UQAAOSw~Etk3~Rl&itmprp=enc%3AAQAIAAAAwG%2FeuCdSkLl8Kz1bJcfU0IVhsqcv0x26cEJvoracDBZCKDSlTKPL6k%2BiuCCBE4qgz4Ixowsz%2FncF0zdktAup2%2Fx3rblHc%2Ff%2FEwnE5mBzIjcmMqfVfinMk0XhSVQ%2Fn4VOQFUq5CqAUCnHN4xo2MwuRIwKnpfEDUlemXimsZl%2BM%2FAk0dao2KswxKoOwFSVSBlF9eWQVm56Kc5IZIjDCPd0qZNcccy%2Bsi015Y9BqTULdgVy81TxCTS8ByXmAjd%2B%2BBtDpQ%3D%3D%7Ctkp%3ABk9SR67h5tTGYw
I have messaged them multiple times, with no reply. I finally gave up and bought a junker for $90.