does anyone know where I can buy , just the Center arm for the window on my 2010 RT. The arm broke so I can not put my window up or down. I know that BRP use to sell them, cost $35.00 5 years ago but now they will only sell the window motor assembly for a mere $769.00 , considering that this is a part that breaks a few times over the life of your trike it was pretty crappy of them to decide not to sell the only part, of the window assembly, that breaks but wants to charge us a Fortune for a whole assembly.