Doesn’t hurt to ask. Not related to anything electrical, but “a while” ago my office chair mechanism started to make really annoying noise, metal grinding on metal screech. It was at least 6 years old at that point and isn’t high-end model by any stretch. I sent email to manufacturer if they could point me to a retailer who sells spare parts but instead they just shipped me a new mechanism for free, no questions asked.

Obviously if the model isn’t available anymore it might be a different story, but if it’s still on the market they might give a surprise.