Shark cordless vacuum V1950SP The brush bar cap - the little flat piece at the end of the brush bar that is closet to the gear box that goes from the brush bar into the main part of the vacuum to stablelize the brush bar- I hope I am making myself clear. It seems that all that the company has is the parts that are listed in the manual. Does anyone know where I can find this part? Does anyone have an old vacuum that is too far gone to repair that would want to sell me the part. Thank you.