Is the frame a black one? If so, I think I know the seller through Bird owners page on fb. He was trying to sell the complete bike at first, then frame with BOTH linkages. I offered to buy the LT linkage if he wanted to sell it separately and make the 145 a 145 again. He initially refused, and I managed to get a random one that appeared on Bird site. A month or so later, he’s still not sold frame, but is indeed selling the LT linkage separately! Think he did sell it, was advertised on fb I think. Bit naughty if he said it was an LT when he sold it to you though… Defo be worth disputing, should ask for 90 quid refund to purchase a new linkage from Bird. Not sure if they have stock though??